{
    "model": {
        "rank": 4443,
        "code": "thing-q171877",
        "model_id": "vr.tr.hydrogen-peroxide",
        "name": "hydrogen peroxide",
        "purpose": "Enable an agent to recognise hydrogen peroxide, assess the condition of a specified material, and determine which uses or handling decisions require further evidence.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q171877/",
        "tier": 2,
        "score": 75,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "hydrogenperoxyl"
            ],
            "aliasCount": 1,
            "merged": 1,
            "knownIn": 75,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q171877",
                "url": "https://www.wikidata.org/wiki/Q171877",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T20:14:14Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 26.4,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a087cd-802c-7402-8249-4f9607f00ed0\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: hydrogen peroxide\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 695 things:\n# Batch 004: 100",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 67.5,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a087cd-8023-74b0-82ea-3e912ae57cef\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: hydrogen peroxide\nRegistry id: vr.tr.hydrogen-peroxide\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entr"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q171877",
                "registryId": "vr.tr.hydrogen-peroxide",
                "name": "hydrogen peroxide",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q171877/",
            "model": {
                "registry_id": "vr.tr.hydrogen-peroxide",
                "name": "hydrogen peroxide",
                "purpose": "Enable an agent to recognise hydrogen peroxide, assess the condition of a specified material, and determine which uses or handling decisions require further evidence.",
                "definition": "Hydrogen peroxide (H₂O₂) is a molecular inorganic compound containing an oxygen-oxygen single bond that is miscible with water, acts as an oxidizing or reducing agent depending on the reaction, and decomposes into water and oxygen.",
                "scope_statement": "This model owns hydrogen peroxide as the chemical substance H2O2, including the concentration, grade, stabilisation and condition needed to assess pure material or an identified aqueous preparation, anchored to registry entry vr.tr.hydrogen-peroxide.",
                "in_scope": [
                    "Chemical identity and distinction from other peroxide-bearing substances",
                    "Hydrogen peroxide concentration, water content, impurities and grade",
                    "Phase and measured properties under stated conditions",
                    "Decomposition, stabilisation, contamination and material compatibility",
                    "Concentration-dependent hazards and jurisdiction-specific identity records",
                    "Evidence that a material meets the requirements of an intended use"
                ],
                "out_of_scope": [
                    "Complete formulations and commercial products containing hydrogen peroxide",
                    "Manufacturing plants and synthesis processes",
                    "Storage vessels, dispensing equipment and ventilation systems as engineered assets",
                    "Clinical treatment decisions or claims of therapeutic effectiveness",
                    "Complete bleaching, disinfection, analytical or propulsion process models",
                    "Other inorganic peroxides, organic peroxides and peroxide-releasing compounds"
                ],
                "distinguishing_features": [
                    "The identified molecular substance must be H2O2; an oxygen-oxygen bond alone does not distinguish hydrogen peroxide from other peroxides.",
                    "An aqueous hydrogen peroxide preparation must distinguish the H2O2 component from the water and other constituents; its concentration is not the purity of neat hydrogen peroxide.",
                    "A peroxide-releasing solid or adduct must retain its own identity rather than being recorded as hydrogen peroxide solely because it releases H2O2.",
                    "A product marketed as bleach or disinfectant qualifies only when composition evidence identifies hydrogen peroxide; the use label alone is insufficient.",
                    "A nonspecific oxidant or peroxide test cannot by itself establish hydrogen peroxide identity in a mixture containing other reactive substances."
                ],
                "characteristics": [
                    {
                        "name": "Chemical identity",
                        "kind": "category",
                        "unit_or_values": "H2O2; verified chemical name and CAS, PubChem and EC identifiers",
                        "why_it_matters": "Connects records for the same substance while separating related peroxides and product identities."
                    },
                    {
                        "name": "Hydrogen peroxide content",
                        "kind": "measurement",
                        "unit_or_values": "Mass fraction or % w/w preferred; other expressions require an explicit basis and conversion conditions",
                        "why_it_matters": "Concentration affects properties, hazards and fitness for use."
                    },
                    {
                        "name": "Grade and specification",
                        "kind": "category",
                        "unit_or_values": "Supplier grade, applicable specification and documented conformity",
                        "why_it_matters": "A grade name alone does not establish acceptable impurity or additive levels."
                    },
                    {
                        "name": "Stabiliser and impurity profile",
                        "kind": "measurement",
                        "unit_or_values": "Constituent identity and concentration in mg/kg, mg/L or another stated basis; detection limits",
                        "why_it_matters": "Additives and contaminants can affect decomposition and interfere with intended uses."
                    },
                    {
                        "name": "Physical state and reference conditions",
                        "kind": "state",
                        "unit_or_values": "Observed phase, temperature in °C, pressure in kPa and composition",
                        "why_it_matters": "Properties of pure material cannot automatically be applied to aqueous preparations."
                    },
                    {
                        "name": "Physical property measurements",
                        "kind": "measurement",
                        "unit_or_values": "Density in kg/m³; phase-transition temperatures in °C; associated composition, pressure and method",
                        "why_it_matters": "Supports identification and interpretation of measurements without treating condition-dependent values as universal constants."
                    },
                    {
                        "name": "Assay and stability history",
                        "kind": "relation",
                        "unit_or_values": "Dated assay results linked to lot, method, uncertainty and storage history",
                        "why_it_matters": "A historical certificate may not represent the current hydrogen peroxide content."
                    },
                    {
                        "name": "Decomposition indicators",
                        "kind": "state",
                        "unit_or_values": "Reported temperature trend, gas evolution, pressure change and assay loss; normal, abnormal or unknown",
                        "why_it_matters": "Supports recognition of potentially unstable material without requiring direct inspection of a suspect container."
                    },
                    {
                        "name": "Compatibility assessment",
                        "kind": "relation",
                        "unit_or_values": "Contact material or co-substance linked to concentration, temperature and supporting evidence",
                        "why_it_matters": "Compatibility conclusions require conditions and cannot be inferred from a material name alone."
                    },
                    {
                        "name": "Applicable hazard and exposure records",
                        "kind": "relation",
                        "unit_or_values": "Classification, safety data sheet and occupational exposure limits with jurisdiction, date, concentration and units",
                        "why_it_matters": "Hazard classifications and limits must be matched to the actual material and governing context."
                    }
                ],
                "affordances": [
                    "Resolve an identified material to hydrogen peroxide while retaining the distinction between substance and preparation.",
                    "Compare an assay and impurity profile with a documented use specification.",
                    "Flag missing or inconsistent concentration units, reference conditions and identity evidence.",
                    "Assess whether storage history and assay results support the recorded current condition.",
                    "Retrieve applicable compatibility and hazard evidence for a proposed contact or use.",
                    "Route abnormal decomposition indicators or insufficient evidence to qualified review."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-material-boundary",
                        "name": "Identity and material boundary",
                        "description": "Establishes which substance is represented and how a particular preparation relates to it.",
                        "rationale": "Hydrogen peroxide must remain distinct from aqueous formulations, other peroxides and peroxide-releasing materials.",
                        "layers": [
                            {
                                "id": "molecular-identity",
                                "name": "Molecular identity",
                                "description": "Connects H2O2 to authoritative identity evidence.",
                                "findings": [
                                    {
                                        "id": "verified-hydrogen-peroxide-identity",
                                        "name": "Verified hydrogen peroxide identity",
                                        "description": "Record the evidence that the named substance is H2O2 and reconcile its identifiers.",
                                        "questions": [
                                            {
                                                "text": "What authoritative record verifies the chemical name, formula, CAS number, PubChem CID and EC number?",
                                                "kind": "provenance",
                                                "id": "verified-hydrogen-peroxide-identity-q01"
                                            },
                                            {
                                                "text": "Does the identification distinguish hydrogen peroxide from other peroxides that could produce the same screening response?",
                                                "kind": "boundary",
                                                "id": "verified-hydrogen-peroxide-identity-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "substance-and-preparation",
                                "name": "Substance and preparation",
                                "description": "Locates the boundary between hydrogen peroxide and the material containing it.",
                                "findings": [
                                    {
                                        "id": "preparation-identity",
                                        "name": "Preparation identity",
                                        "description": "Identify whether the material is neat hydrogen peroxide, an aqueous preparation or a component of a broader formulation.",
                                        "questions": [
                                            {
                                                "text": "Is the assessed material neat H2O2, an aqueous preparation, a formulated product or a distinct peroxide-releasing compound?",
                                                "kind": "definition",
                                                "id": "preparation-identity-q01"
                                            },
                                            {
                                                "text": "Which constituents and product claims require a linked formulation model rather than inclusion in the substance identity?",
                                                "kind": "boundary",
                                                "id": "preparation-identity-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "concentration-grade-and-assay",
                        "name": "Concentration, grade and assay",
                        "description": "Records how much hydrogen peroxide is present and whether the material meets a defined specification.",
                        "rationale": "Materials sold under the same substance name can differ materially in strength, additives and acceptable applications.",
                        "layers": [
                            {
                                "id": "content-and-measurement-basis",
                                "name": "Content and measurement basis",
                                "description": "Makes concentration values interpretable and comparable.",
                                "findings": [
                                    {
                                        "id": "traceable-peroxide-content",
                                        "name": "Traceable peroxide content",
                                        "description": "Attach concentration to a measurement basis, assay method, date and uncertainty.",
                                        "questions": [
                                            {
                                                "text": "What is the measured H2O2 content, and is it expressed as mass fraction, mass per volume, molarity or another explicitly defined basis?",
                                                "kind": "measurement",
                                                "id": "traceable-peroxide-content-q01"
                                            },
                                            {
                                                "text": "Which assay method was used, and what evidence addresses interference from other oxidants or formulation constituents?",
                                                "kind": "provenance",
                                                "id": "traceable-peroxide-content-q02"
                                            },
                                            {
                                                "text": "If a volume-strength label is supplied, what definition and reference conditions support its conversion to the recorded concentration?",
                                                "kind": "measurement",
                                                "id": "traceable-peroxide-content-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-additives-and-impurities",
                                "name": "Grade, additives and impurities",
                                "description": "Separates grade claims from measured composition and specification compliance.",
                                "findings": [
                                    {
                                        "id": "documented-grade-conformity",
                                        "name": "Documented grade conformity",
                                        "description": "Record stabilisers, relevant impurities and evidence of compliance with the claimed grade.",
                                        "questions": [
                                            {
                                                "text": "Which specification defines the claimed grade, and which lot-specific certificate demonstrates conformity?",
                                                "kind": "provenance",
                                                "id": "documented-grade-conformity-q01"
                                            },
                                            {
                                                "text": "Which stabilisers and impurities are quantified, and which remain undisclosed or below stated detection limits?",
                                                "kind": "measurement",
                                                "id": "documented-grade-conformity-q02"
                                            },
                                            {
                                                "text": "Could the documented additives or impurity limits exclude the intended application?",
                                                "kind": "action",
                                                "id": "documented-grade-conformity-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "physical-state-and-property-context",
                        "name": "Physical state and property context",
                        "description": "Associates physical observations and reference values with composition and environmental conditions.",
                        "rationale": "Hydrogen peroxide solution properties depend on concentration, and decomposition can complicate interpretation of thermal data.",
                        "layers": [
                            {
                                "id": "phase-and-reference-conditions",
                                "name": "Phase and reference conditions",
                                "description": "Records the actual material state and the conditions under which it is assessed.",
                                "findings": [
                                    {
                                        "id": "condition-specific-phase",
                                        "name": "Condition-specific phase",
                                        "description": "Describe phase behaviour using the composition, temperature and pressure of the assessed material.",
                                        "questions": [
                                            {
                                                "text": "What phase is reported at the material's measured concentration, temperature and pressure?",
                                                "kind": "measurement",
                                                "id": "condition-specific-phase-q01"
                                            },
                                            {
                                                "text": "Do cited freezing or boiling data describe pure H2O2 or an aqueous preparation of the relevant concentration?",
                                                "kind": "boundary",
                                                "id": "condition-specific-phase-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "property-evidence",
                                "name": "Property evidence",
                                "description": "Qualifies numerical properties before they support identification or calculations.",
                                "findings": [
                                    {
                                        "id": "qualified-property-values",
                                        "name": "Qualified property values",
                                        "description": "Retain units, measurement methods and limitations for density and thermal properties.",
                                        "questions": [
                                            {
                                                "text": "Which source provides the density and phase-transition values, with units, composition and reference conditions?",
                                                "kind": "provenance",
                                                "id": "qualified-property-values-q01"
                                            },
                                            {
                                                "text": "Does the reported thermal behaviour distinguish a phase transition from decomposition or a measurement limited by decomposition?",
                                                "kind": "measurement",
                                                "id": "qualified-property-values-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "decomposition-and-compatibility",
                        "name": "Decomposition and compatibility",
                        "description": "Tracks evidence about hydrogen peroxide loss, oxygen evolution and conditions affecting stability.",
                        "rationale": "Decomposition changes both material strength and the demands placed on its surroundings.",
                        "layers": [
                            {
                                "id": "stability-and-condition-history",
                                "name": "Stability and condition history",
                                "description": "Relates the current assay and reported condition to storage and contamination history.",
                                "findings": [
                                    {
                                        "id": "current-stability-evidence",
                                        "name": "Current stability evidence",
                                        "description": "Record observations and assay trends relevant to decomposition into water and oxygen.",
                                        "questions": [
                                            {
                                                "text": "How has measured H2O2 content changed over time, accounting for assay uncertainty and sampling differences?",
                                                "kind": "measurement",
                                                "id": "current-stability-evidence-q01"
                                            },
                                            {
                                                "text": "What exposure to heat, light or possible contamination is documented for this lot?",
                                                "kind": "provenance",
                                                "id": "current-stability-evidence-q02"
                                            },
                                            {
                                                "text": "Which reported signs of unexpected heating, gas evolution or pressure change require escalation under the applicable procedure?",
                                                "kind": "action",
                                                "id": "current-stability-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "contact-and-reaction-compatibility",
                                "name": "Contact and reaction compatibility",
                                "description": "Evaluates contact materials and co-substances under specified conditions.",
                                "findings": [
                                    {
                                        "id": "supported-contact-assessment",
                                        "name": "Supported contact assessment",
                                        "description": "Link compatibility conclusions to concentration, temperature, surface condition and contamination controls.",
                                        "questions": [
                                            {
                                                "text": "What evidence supports compatibility with the proposed container, seal or wetted surface at the actual concentration and temperature?",
                                                "kind": "provenance",
                                                "id": "supported-contact-assessment-q01"
                                            },
                                            {
                                                "text": "Could the proposed contact introduce catalytic contamination or a reactive co-substance?",
                                                "kind": "boundary",
                                                "id": "supported-contact-assessment-q02"
                                            },
                                            {
                                                "text": "Is the evidence sufficient to accept the contact, or must a qualified reviewer resolve the uncertainty?",
                                                "kind": "action",
                                                "id": "supported-contact-assessment-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazard-context-and-use-eligibility",
                        "name": "Hazard context and use eligibility",
                        "description": "Connects the assessed material to applicable hazard records and the requirements of a proposed use.",
                        "rationale": "The name hydrogen peroxide alone does not establish a hazard classification, exposure limit or suitable application.",
                        "layers": [
                            {
                                "id": "applicable-hazard-records",
                                "name": "Applicable hazard records",
                                "description": "Identifies the classifications and exposure criteria governing the particular material.",
                                "findings": [
                                    {
                                        "id": "concentration-specific-hazard-evidence",
                                        "name": "Concentration-specific hazard evidence",
                                        "description": "Match safety information to composition, jurisdiction, physical form and revision date.",
                                        "questions": [
                                            {
                                                "text": "Which current safety data sheet and jurisdiction-specific GHS implementation apply to this preparation and concentration?",
                                                "kind": "provenance",
                                                "id": "concentration-specific-hazard-evidence-q01"
                                            },
                                            {
                                                "text": "Which occupational exposure limits apply, with units, averaging periods and the relevant airborne exposure form?",
                                                "kind": "measurement",
                                                "id": "concentration-specific-hazard-evidence-q02"
                                            },
                                            {
                                                "text": "Which concentration or formulation boundaries change the applicable classification or transport record?",
                                                "kind": "boundary",
                                                "id": "concentration-specific-hazard-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "intended-use-evidence",
                                "name": "Intended-use evidence",
                                "description": "Determines whether material-level evidence supports referral to a particular application.",
                                "findings": [
                                    {
                                        "id": "material-use-eligibility",
                                        "name": "Material use eligibility",
                                        "description": "Compare current composition and condition with documented application requirements while retaining process validation elsewhere.",
                                        "questions": [
                                            {
                                                "text": "What concentration, grade, stabiliser restrictions and impurity limits does the intended application require?",
                                                "kind": "definition",
                                                "id": "material-use-eligibility-q01"
                                            },
                                            {
                                                "text": "Do current assay, certificate and condition records meet those requirements, or is eligibility unresolved?",
                                                "kind": "action",
                                                "id": "material-use-eligibility-q02"
                                            },
                                            {
                                                "text": "Which effectiveness claims, operating conditions and authorisations must be established by the linked product or process model?",
                                                "kind": "boundary",
                                                "id": "material-use-eligibility-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "This is recall-based information; no sources were consulted.",
                                            "Physical constants describe the pure substance under stated conditions and should not be applied directly to aqueous formulations.",
                                            "Verify current hazard categories, exposure limits, transport entries, and grade specifications for the actual concentration, additives, and jurisdiction."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Nearly anhydrous hydrogen peroxide",
                                            "Dilute aqueous solutions",
                                            "Concentrated aqueous solutions",
                                            "Stabilized technical grade",
                                            "Pharmaceutical grade",
                                            "High-purity electronic grade"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "scheme": "CAS Registry Number",
                                                "value_or_pattern": "7722-84-1",
                                                "note": "Identifies hydrogen peroxide; does not specify solution concentration, purity, or stabilizers."
                                            },
                                            {
                                                "scheme": "PubChem CID",
                                                "value_or_pattern": "784",
                                                "note": "Compound record for hydrogen peroxide."
                                            },
                                            {
                                                "scheme": "EC number",
                                                "value_or_pattern": "231-765-0",
                                                "note": "European chemical inventory identifier."
                                            },
                                            {
                                                "scheme": "Molecular formula",
                                                "value_or_pattern": "H2O2",
                                                "note": "Two hydrogen atoms and two oxygen atoms per molecule."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "United Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS): framework for communicating physical and health hazards.",
                                            "United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations: hydrogen peroxide transport entries distinguish concentration and formulation.",
                                            "European Union CLP Regulation: classification, labelling, and packaging requirements for substances and mixtures.",
                                            "United States Pharmacopeia-National Formulary (USP-NF), issued by the United States Pharmacopeial Convention: compendial requirements for relevant pharmaceutical preparations."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Bleaching pulp, paper, and textiles.",
                                            "Disinfection and sterilization in formulated liquid or vapor systems.",
                                            "Oxidant in chemical synthesis.",
                                            "Wastewater treatment and advanced oxidation processes.",
                                            "Propellant or oxidizer in specialized propulsion systems."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Molar mass",
                                                "typical_range": "34.01",
                                                "unit": "g/mol"
                                            },
                                            {
                                                "quantity": "Melting point of pure hydrogen peroxide",
                                                "typical_range": "Approximately -0.43",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Normal boiling point of pure hydrogen peroxide",
                                                "typical_range": "Approximately 150; decomposition complicates boiling",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Density of pure liquid at approximately 20 °C",
                                                "typical_range": "Approximately 1.45",
                                                "unit": "g/cm³"
                                            },
                                            {
                                                "quantity": "Hydrogen peroxide mass fraction in common commercial aqueous solutions",
                                                "typical_range": "Approximately 3-70, depending on application and grade",
                                                "unit": "% by mass"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Exothermic decomposition releases oxygen; confinement can cause dangerous pressure buildup.",
                                            "Heat, contamination, and contact with certain metals or catalytic surfaces can accelerate decomposition.",
                                            "Concentrated solutions can cause severe skin burns and eye damage; mist or vapor can injure the respiratory tract.",
                                            "Strong oxidizing action can intensify combustion and cause violent reactions with incompatible materials.",
                                            "Decomposition during storage reduces active concentration, potentially undermining bleaching, disinfection, or process performance."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "GHS implementation and mixture classification requirements differ among jurisdictions.",
                                            "Permitted disinfectant uses, product authorizations, and label claims depend on local regulation.",
                                            "Occupational exposure limits and transport requirements must be checked for the jurisdiction and formulation."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "Water",
                                                "difference": "Water has formula H₂O and lacks the oxygen-oxygen bond characteristic of hydrogen peroxide."
                                            },
                                            {
                                                "name": "Organic peroxides",
                                                "difference": "Organic peroxides contain organic groups attached to a peroxide unit; hydrogen peroxide contains no carbon."
                                            },
                                            {
                                                "name": "Sodium peroxide",
                                                "difference": "Sodium peroxide is an ionic solid containing peroxide anions and sodium cations, rather than molecular H₂O₂."
                                            },
                                            {
                                                "name": "Hydrogen peroxide solution",
                                                "difference": "A solution is a mixture of hydrogen peroxide with water and potentially additives; its properties depend on composition."
                                            },
                                            {
                                                "name": "Carbamide peroxide",
                                                "difference": "Carbamide peroxide is a urea-hydrogen peroxide addition compound rather than hydrogen peroxide alone."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of hydrogen peroxide this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Which authoritative identity records should supply the verified CAS, PubChem and EC identifiers, and how should preparation-specific records be linked?",
                "Which primary references provide reliable concentration-dependent density, freezing and boiling data, including decomposition-related limitations?",
                "Which assay methods and uncertainty requirements are appropriate for the grades and formulations the registry will encounter?",
                "Which documented stabiliser systems, contaminant limits and compatibility references are needed for meaningful stability assessments?",
                "Which jurisdictions and intended uses must the initial model support for hazard classification, exposure limits, transport identity and grade requirements?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 19,
                "questions": 35
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "chemical substance or material",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a hydrogen peroxide, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise hydrogen peroxide, assess the condition of a specified material, and determine which uses or handling decisions require further evidence.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: hydrogenperoxyl.",
                "1 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 75 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a hydrogen peroxide, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state",
                "use it up, and then need more of it"
            ],
            "howItIsRecognised": [
                "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "hydrogenperoxyl"
                    ]
                }
            ],
            "standing": "Described in 75 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 1 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one hydrogen peroxide from another, and a hydrogen peroxide from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a hydrogen peroxide sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a hydrogen peroxide from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a hydrogen peroxide is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a hydrogen peroxide is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a hydrogen peroxide is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a hydrogen peroxide is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a hydrogen peroxide is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a hydrogen peroxide is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a hydrogen peroxide passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a hydrogen peroxide between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a hydrogen peroxide, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a hydrogen peroxide is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a hydrogen peroxide and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a hydrogen peroxide is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a hydrogen peroxide performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a hydrogen peroxide.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a hydrogen peroxide at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "supply-and-consumption",
                                "name": "Supply and consumption",
                                "description": "Quantities, rates and what running out means.",
                                "findings": [
                                    {
                                        "id": "consumption-and-stock",
                                        "name": "Consumption, stock and replenishment",
                                        "description": "How much of a hydrogen peroxide there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q02",
                                                "text": "Who or what asserted this about the supply of a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q03",
                                                "text": "What may an agent decide or do once the supply of a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "composition-and-identity",
                        "name": "Composition, grade and chemical identity",
                        "description": "What hydrogen peroxide is made of and how pure the thing in hand is.",
                        "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.",
                        "layers": [
                            {
                                "id": "chemical-identity",
                                "name": "Chemical identity",
                                "description": "Formula, structure and the registry numbers that name it unambiguously.",
                                "findings": [
                                    {
                                        "id": "identity-record",
                                        "name": "Identity and registry numbers",
                                        "description": "What identifies this substance across suppliers and regulators.",
                                        "questions": [
                                            {
                                                "id": "identity-record-q01",
                                                "text": "What formula, structure and registry identifiers name hydrogen peroxide unambiguously?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "identity-record-q02",
                                                "text": "Which related substances share a name in common use but not an identifier?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-and-impurities",
                                "name": "Grade, purity and impurities",
                                "description": "The specification a batch meets and what else is in it.",
                                "findings": [
                                    {
                                        "id": "specification",
                                        "name": "Specification and assay",
                                        "description": "How purity is stated and measured, and which impurities matter.",
                                        "questions": [
                                            {
                                                "id": "specification-q01",
                                                "text": "What grades of hydrogen peroxide exist, how is purity assayed, and which impurities are limited?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "specification-q02",
                                                "text": "Which use requires which grade, and what happens when a lower grade is substituted?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "properties-and-behaviour",
                        "name": "Properties and behaviour",
                        "description": "How hydrogen peroxide behaves under conditions an agent can measure or change.",
                        "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.",
                        "layers": [
                            {
                                "id": "physical-constants",
                                "name": "Physical constants",
                                "description": "Values that hold for the pure substance, with their conditions.",
                                "findings": [
                                    {
                                        "id": "constants-record",
                                        "name": "Constants and conditions",
                                        "description": "The quantities worth recording and the state they apply in.",
                                        "questions": [
                                            {
                                                "id": "constants-record-q01",
                                                "text": "What are the defining physical constants of hydrogen peroxide, in what units and under what conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "constants-record-q02",
                                                "text": "Which of these values change with grade or form rather than being fixed?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "stability-and-reactivity",
                                "name": "Stability and reactivity",
                                "description": "What it reacts with, degrades into, and how it is stored.",
                                "findings": [
                                    {
                                        "id": "incompatibilities",
                                        "name": "Incompatibilities and degradation",
                                        "description": "What must not meet it, and what it becomes over time.",
                                        "questions": [
                                            {
                                                "id": "incompatibilities-q01",
                                                "text": "What is hydrogen peroxide incompatible with, and what does it degrade into under storage?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "incompatibilities-q02",
                                                "text": "What storage and handling does that require, and who is competent to do it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazard-and-regulation",
                        "name": "Hazard classification and regulation",
                        "description": "How hydrogen peroxide can harm, and what the law says about holding and moving it.",
                        "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.",
                        "layers": [
                            {
                                "id": "hazard-class",
                                "name": "Hazard classification",
                                "description": "Classified hazards, exposure limits and protective measures.",
                                "findings": [
                                    {
                                        "id": "classified-hazards",
                                        "name": "Classified hazards and limits",
                                        "description": "The classification, the scheme it belongs to, and the limits set.",
                                        "questions": [
                                            {
                                                "id": "classified-hazards-q01",
                                                "text": "How is hydrogen peroxide classified for hazard, under which scheme, and what exposure limits apply?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "classified-hazards-q02",
                                                "text": "What protection does handling require, and what must an agent refuse to do without it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "regulatory-identity",
                                "name": "Regulatory identity and control",
                                "description": "Registration, restriction and transport rules by jurisdiction.",
                                "findings": [
                                    {
                                        "id": "controls",
                                        "name": "Controls and jurisdiction",
                                        "description": "Where it is restricted and what the restriction attaches to.",
                                        "questions": [
                                            {
                                                "id": "controls-q01",
                                                "text": "Which registrations, restrictions or transport rules cover hydrogen peroxide, and where?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "controls-q02",
                                                "text": "Does the control attach to the substance, its concentration, or its intended use?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a hydrogen peroxide came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a hydrogen peroxide and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a hydrogen peroxide is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a hydrogen peroxide, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a hydrogen peroxide, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a hydrogen peroxide is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 9,
                "layers": 20,
                "findings": 22,
                "questions": 60
            }
        }
    }
}