{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T09:13:36Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 15.8,
        "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: 01a094e3-c192-7400-9679-5ad0cb6c6c56\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: disiloxane\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 1001 regi",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 67.7,
        "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: 01a094e3-c18e-7e03-b4ab-8662905d28df\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: disiloxane\nRegistry id: vr.tr.disiloxane\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nCo"
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:55:21+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "standards_and_regulation",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:29+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q2675470",
    "registryId": "vr.tr.disiloxane",
    "name": "disiloxane",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q2675470/",
  "model": {
    "registry_id": "vr.tr.disiloxane",
    "name": "disiloxane",
    "purpose": "Enable an agent to identify disiloxane, assess a sample's composition and condition, and determine whether evidence supports its intended handling or use.",
    "definition": "Disiloxane is the parent molecular siloxane with formula Si2H6O and structure H3Si-O-SiH3, consisting of two silicon atoms joined through an oxygen atom.",
    "scope_statement": "This model owns the chemical identity and material-state assessment of parent disiloxane, provisionally interpreted as H3Si-O-SiH3 for vr.tr.disiloxane in PHY / PHY.MAT; the registry's intended referent remains to be confirmed.",
    "in_scope": [
      "Parent disiloxane identity, identifiers and distinction from substituted disiloxanes",
      "Sample purity, dilution, impurities and analytical evidence",
      "Physical properties and phase under recorded temperature and pressure",
      "Stability, compatibility and changes in composition",
      "Substance-specific hazard evidence and jurisdiction-dependent restrictions"
    ],
    "out_of_scope": [
      "Substituted disiloxanes such as hexamethyldisiloxane",
      "Siloxane polymers, silicone materials and broader siloxane-family classifications",
      "Products and mixtures containing disiloxane beyond their relationship to the substance",
      "Manufacturing processes and reaction equipment",
      "Facility operating procedures and emergency-response systems"
    ],
    "distinguishing_features": [
      "Require molecular connectivity H3Si-O-SiH3, with one oxygen bridging two silicon atoms; formula alone is insufficient.",
      "Require the unsubstituted parent structure with six silicon-bound hydrogens, distinguishing it from organically substituted or halogenated disiloxanes.",
      "Check CAS 13597-73-4 and PubChem CID 123318 against the structure rather than accepting a name match alone.",
      "Distinguish the oxygen-bridged molecule from disilane, which has a direct silicon-silicon bond.",
      "Distinguish a discrete two-silicon molecule from longer siloxane chains, rings and silicone polymers."
    ],
    "characteristics": [
      {
        "name": "Chemical identity",
        "kind": "category",
        "unit_or_values": "H6OSi2; connectivity H3Si-O-SiH3",
        "why_it_matters": "Defines the parent compound and prevents substitution of data for another siloxane."
      },
      {
        "name": "Identifier correspondence",
        "kind": "relation",
        "unit_or_values": "Registry vr.tr.disiloxane; CAS 13597-73-4; PubChem CID 123318; EC identifier unresolved",
        "why_it_matters": "Connects the registry entry to external records while preserving unresolved mappings."
      },
      {
        "name": "Disiloxane assay",
        "kind": "measurement",
        "unit_or_values": "mol% or mass%, with method, uncertainty and sampling date",
        "why_it_matters": "Separates actual disiloxane content from supplier grade labels and detector-response percentages."
      },
      {
        "name": "Impurity and diluent profile",
        "kind": "measurement",
        "unit_or_values": "Named components in mol%, ppm by mole or mg/kg, with detection limits",
        "why_it_matters": "Supports decisions about whether measured properties and intended uses apply to the sample."
      },
      {
        "name": "Physical state",
        "kind": "state",
        "unit_or_values": "Gas, liquid, solid, multiphase or unresolved, at temperature in K and absolute pressure in kPa",
        "why_it_matters": "Makes phase an assessment under stated conditions rather than an unconditional label."
      },
      {
        "name": "Phase-transition and vapor-pressure evidence",
        "kind": "measurement",
        "unit_or_values": "Melting and boiling temperatures in K with pressure; vapor pressure in kPa at stated temperature",
        "why_it_matters": "Supports phase and transfer assessments without importing values from substituted disiloxanes."
      },
      {
        "name": "Composition stability",
        "kind": "state",
        "unit_or_values": "Unassessed, unchanged within detection limits, or changed under specified conditions",
        "why_it_matters": "Determines whether earlier assay and identity evidence still represent the material."
      },
      {
        "name": "Hazard and regulatory applicability",
        "kind": "relation",
        "unit_or_values": "Identity-matched classifications, exposure limits and restrictions with jurisdiction, source and date",
        "why_it_matters": "Prevents missing data from being interpreted as evidence of safety or unrestricted use."
      }
    ],
    "affordances": [
      "Resolve a named material record to the parent compound using structure and identifiers.",
      "Assess whether analytical evidence establishes disiloxane identity and adequate purity.",
      "Evaluate phase at specified conditions using applicable property evidence.",
      "Flag changes in composition or unsupported compatibility assumptions before use.",
      "Determine whether an intended use meets documented purity, condition and handling requirements.",
      "Identify missing evidence that prevents a handling, transport or use decision."
    ],
    "agent_conduct": {
      "may": [
        "Explain disiloxane as the parent siloxane and its structural interest in silicon chemistry.",
        "Report hazards and handling rules from literature and safety data sheets."
      ],
      "must_not": [
        "Handle it outside a supervised laboratory equipped for flammable silicon hydrides.",
        "Store it where it can contact air, moisture or ignition sources against safety guidance.",
        "Provide preparation procedures to people outside a supervised laboratory."
      ],
      "requires_human": [
        "Approving storage or disposal of silicon hydride compounds."
      ]
    },
    "ethics": {
      "considerations": [
        "Flammable volatile hydrides endanger laboratory workers and neighbours.",
        "Accurate reporting matters for research others build on."
      ],
      "affected_parties": [
        "Laboratory workers",
        "Emergency responders",
        "Students"
      ]
    },
    "owners": {
      "steward": "The laboratory or business that holds it; chemical safety authorities regulate supply and use.",
      "master_systems": []
    },
    "visual_identification": [
      "Identified by container label, chemical name and identifier, and certificate of analysis rather than by appearance alone."
    ],
    "failure_modes_and_hazards": [
      "Fire and explosion risk.",
      "Uncontrolled reactions with air or moisture."
    ],
    "standards_and_regulation": [
      "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations."
    ],
    "what_it_is_for": [
      "Disiloxane is encountered in specialist chemical research concerning silicon hydrides and silicon-oxygen bonding.",
      "Its identity and behavior are examined through analytical characterization and studies of chemical reactions.",
      "The parent compound must be distinguished from substituted disiloxanes because their composition and properties differ."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q2675470: disiloxane",
      "url": "https://www.wikidata.org/wiki/Q2675470",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Disiloxane",
      "url": "https://en.wikipedia.org/wiki/Disiloxane",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "parent-disiloxane-identity",
        "name": "Parent disiloxane identity",
        "description": "Establish which chemical entity the registry entry denotes.",
        "rationale": "The name can be confused with substituted compounds and the broader disiloxane structural class.",
        "layers": [
          {
            "id": "molecular-referent",
            "name": "Molecular referent",
            "description": "Anchor recognition in molecular connectivity.",
            "findings": [
              {
                "id": "unsubstituted-oxygen-bridge",
                "name": "Unsubstituted oxygen bridge",
                "description": "The working referent is H6OSi2 with connectivity H3Si-O-SiH3. [PubChem disiloxane record](https://pubchem.ncbi.nlm.nih.gov/compound/Disiloxane).",
                "questions": [
                  {
                    "text": "Does the registry's originating record explicitly identify H3Si-O-SiH3?",
                    "kind": "provenance",
                    "id": "unsubstituted-oxygen-bridge-q01"
                  },
                  {
                    "text": "Does the candidate material have the parent structure, or does its name abbreviate a substituted disiloxane?",
                    "kind": "boundary",
                    "id": "unsubstituted-oxygen-bridge-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "identifier-reconciliation",
            "name": "Identifier reconciliation",
            "description": "Connect external records only when they denote the same molecule.",
            "findings": [
              {
                "id": "structure-matched-records",
                "name": "Structure-matched records",
                "description": "CAS 13597-73-4 and PubChem CID 123318 identify the parent compound in the consulted record; other identifiers require verification. [PubChem identifiers](https://pubchem.ncbi.nlm.nih.gov/compound/Disiloxane).",
                "questions": [
                  {
                    "text": "Do the supplier record, analytical reference and registry mapping agree on both identifiers and structure?",
                    "kind": "provenance",
                    "id": "structure-matched-records-q01"
                  },
                  {
                    "text": "Which EC or jurisdictional inventory identifiers, if any, are verified for this exact compound?",
                    "kind": "definition",
                    "id": "structure-matched-records-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "disiloxane-sample-composition",
        "name": "Disiloxane sample composition",
        "description": "Establish what a sample contains and how confidently its composition is known.",
        "rationale": "A parent-compound record does not establish the purity or identity of a supplied material.",
        "layers": [
          {
            "id": "analytical-recognition",
            "name": "Analytical recognition",
            "description": "Evaluate evidence that distinguishes parent disiloxane from nearby chemical identities.",
            "findings": [
              {
                "id": "identity-discrimination",
                "name": "Identity discrimination",
                "description": "Require analytical evidence capable of distinguishing parent disiloxane from disilane, substituted disiloxanes and other components relevant to the sample.",
                "questions": [
                  {
                    "text": "Which validated analytical measurements distinguish H3Si-O-SiH3 from plausible alternative components?",
                    "kind": "measurement",
                    "id": "identity-discrimination-q01"
                  },
                  {
                    "text": "What reference material or primary characterization supports the assignment?",
                    "kind": "provenance",
                    "id": "identity-discrimination-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "assay-and-admixtures",
            "name": "Assay and admixtures",
            "description": "Separate parent-compound content from dilution and contamination.",
            "findings": [
              {
                "id": "composition-qualified-grade",
                "name": "Composition-qualified grade",
                "description": "Represent grade through measured disiloxane content, named diluents and relevant impurities rather than an unexplained purity label.",
                "questions": [
                  {
                    "text": "What is the disiloxane fraction, on what basis, and with what uncertainty?",
                    "kind": "measurement",
                    "id": "composition-qualified-grade-q01"
                  },
                  {
                    "text": "Which impurities or diluents would invalidate the proposed use, and were they measured at adequate detection limits?",
                    "kind": "action",
                    "id": "composition-qualified-grade-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "disiloxane-phase-and-properties",
        "name": "Disiloxane phase and properties",
        "description": "Relate physical observations and property values to the exact substance and conditions.",
        "rationale": "State and transfer decisions require condition-specific evidence for the parent compound.",
        "layers": [
          {
            "id": "condition-dependent-phase",
            "name": "Condition-dependent phase",
            "description": "Record phase together with temperature, pressure and composition.",
            "findings": [
              {
                "id": "phase-assessment",
                "name": "Phase assessment",
                "description": "A phase designation must specify whether it describes pure disiloxane or a mixture and whether it was measured or inferred.",
                "questions": [
                  {
                    "text": "What phase is observed at the recorded temperature and absolute pressure?",
                    "kind": "measurement",
                    "id": "phase-assessment-q01"
                  },
                  {
                    "text": "Does the phase evidence concern pure parent disiloxane or a sample with a significant diluent?",
                    "kind": "boundary",
                    "id": "phase-assessment-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "property-evidence",
            "name": "Property evidence",
            "description": "Qualify physical constants by identity, method and applicability.",
            "findings": [
              {
                "id": "verified-transition-data",
                "name": "Verified transition data",
                "description": "Melting point, boiling point and vapor-pressure values remain research targets; no numerical values are adopted in this draft.",
                "questions": [
                  {
                    "text": "Which measured transition temperatures and vapor-pressure data are available for CAS 13597-73-4?",
                    "kind": "provenance",
                    "id": "verified-transition-data-q01"
                  },
                  {
                    "text": "What pressure, purity, uncertainty and validity range accompany each value?",
                    "kind": "measurement",
                    "id": "verified-transition-data-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "disiloxane-stability-and-compatibility",
        "name": "Disiloxane stability and compatibility",
        "description": "Assess whether disiloxane retains its identity under proposed storage and contact conditions.",
        "rationale": "Compatibility assumptions drawn from other siloxanes require explicit validation for the hydrogen-bearing parent.",
        "layers": [
          {
            "id": "composition-over-time",
            "name": "Composition over time",
            "description": "Connect exposure history with evidence of chemical change.",
            "findings": [
              {
                "id": "stability-evidence",
                "name": "Stability evidence",
                "description": "Track temperature, duration and atmosphere alongside repeat analyses without presuming particular decomposition pathways.",
                "questions": [
                  {
                    "text": "Under which documented conditions does disiloxane composition remain unchanged within analytical limits?",
                    "kind": "measurement",
                    "id": "stability-evidence-q01"
                  },
                  {
                    "text": "If composition changes, which products are identified and how does that affect the material's usability?",
                    "kind": "action",
                    "id": "stability-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "contact-compatibility",
            "name": "Contact compatibility",
            "description": "Evaluate proposed contact with atmospheres, contaminants and containment materials.",
            "findings": [
              {
                "id": "parent-specific-contact-evidence",
                "name": "Parent-specific contact evidence",
                "description": "Require evidence specific to parent disiloxane before accepting compatibility with moisture, oxygen, seals or vessel surfaces.",
                "questions": [
                  {
                    "text": "Which sources establish compatibility or incompatibility for the proposed contact conditions?",
                    "kind": "provenance",
                    "id": "parent-specific-contact-evidence-q01"
                  },
                  {
                    "text": "What verified limits on temperature, contact time and material selection govern the proposed handling?",
                    "kind": "action",
                    "id": "parent-specific-contact-evidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "disiloxane-use-and-hazard-evidence",
        "name": "Disiloxane use and hazard evidence",
        "description": "Connect identity-matched hazard information and material requirements to an intended action.",
        "rationale": "An agent needs a defensible basis for decisions without treating uncertain classification or missing limits as permission.",
        "layers": [
          {
            "id": "hazard-record-applicability",
            "name": "Hazard record applicability",
            "description": "Evaluate whether safety and regulatory records cover the parent compound and supplied form.",
            "findings": [
              {
                "id": "classification-with-provenance",
                "name": "Classification with provenance",
                "description": "Leave GHS classification, exposure limits and transport status unresolved until current, identity-matched sources are assessed.",
                "questions": [
                  {
                    "text": "Which current classifications and exposure limits explicitly apply to CAS 13597-73-4 in the relevant jurisdiction?",
                    "kind": "provenance",
                    "id": "classification-with-provenance-q01"
                  },
                  {
                    "text": "Does each record cover the neat substance, a specified mixture or a different substituted disiloxane?",
                    "kind": "boundary",
                    "id": "classification-with-provenance-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "use-qualification",
            "name": "Use qualification",
            "description": "Assess a proposed use against the sample's documented condition and applicable requirements.",
            "findings": [
              {
                "id": "evidence-based-use-decision",
                "name": "Evidence-based use decision",
                "description": "Express suitability as a decision tied to an intended use, analytical evidence and documented operating constraints.",
                "questions": [
                  {
                    "text": "What disiloxane purity, impurity limits and physical conditions does the intended use require?",
                    "kind": "action",
                    "id": "evidence-based-use-decision-q01"
                  },
                  {
                    "text": "Which requirements are satisfied, contradicted or unresolved by the available evidence?",
                    "kind": "action",
                    "id": "evidence-based-use-decision-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "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": [
                  "With no recorded sense, the name is interpreted as the unsubstituted parent compound; verify that the registry does not intend the substituted disiloxane family.",
                  "CAS and EC identifiers, phase-transition data, hazard classifications and exposure limits require verification and are omitted.",
                  "The molar mass is calculated from the molecular formula using conventional atomic weights."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of disiloxane 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": "Molecular formula (Hill notation)",
                    "value_or_pattern": "H6OSi2",
                    "note": "Usually written Si2H6O; the structural formula H3Si-O-SiH3 specifies the connectivity."
                  },
                  {
                    "scheme": "SMILES",
                    "value_or_pattern": "[SiH3]O[SiH3]",
                    "note": "Represents the unsubstituted parent compound."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of disiloxane 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": "Approximately 78.22",
                    "unit": "g/mol"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of disiloxane 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": "Disiloxanes",
                    "difference": "The broader family includes substituted compounds containing a Si-O-Si linkage; the parent disiloxane has hydrogen at all six remaining silicon valences."
                  },
                  {
                    "name": "Hexamethyldisiloxane",
                    "difference": "All six silicon-bound hydrogens of the parent are replaced by methyl groups, giving (CH3)3Si-O-Si(CH3)3."
                  },
                  {
                    "name": "Disilane",
                    "difference": "Disilane is Si2H6 with a direct Si-Si bond and no intervening oxygen atom."
                  },
                  {
                    "name": "Siloxane",
                    "difference": "Siloxane denotes a broader structural family containing Si-O-Si linkages, rather than this single parent molecule."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of disiloxane this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Does the registry source confirm the parent compound H3Si-O-SiH3 rather than a structural class or substituted material, and does an existing world model already cover that referent?",
    "What primary measurements establish melting point, boiling point and vapor pressure for parent disiloxane under stated conditions?",
    "Which analytical methods and reference materials reliably establish its identity, assay and relevant impurity limits?",
    "What experimental evidence establishes its stability, reaction behavior and compatibility with atmospheres and containment materials?",
    "Which EC or inventory identifiers, current GHS classifications, exposure limits and transport requirements apply to the exact substance and supplied form?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 14,
    "questions": 24
  }
}
