{ "model": { "rank": 4444, "code": "thing-q170591", "model_id": "vr.tr.hydrogen-sulfide", "name": "hydrogen sulfide", "purpose": "Enable an AI agent to identify hydrogen sulfide, assess its chemical and exposure state, and determine which handling, monitoring or treatment actions require verified controls.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q170591/", "tier": 2, "score": 75, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 75, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q170591", "url": "https://www.wikidata.org/wiki/Q170591", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T20:14:15Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 26.3, "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-80ca-7eb0-b28a-b2ab804374f6\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: hydrogen sulfide\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: 1001", "usd": 0, "recall": true }, "codex": { "seconds": 68.3, "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-80b7-7c33-97a3-ef75c4e3f397\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: hydrogen sulfide\nRegistry id: vr.tr.hydrogen-sulfide\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry:" } } }, "metaModel": { "id": "THING-Q170591", "registryId": "vr.tr.hydrogen-sulfide", "name": "hydrogen sulfide", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q170591/", "model": { "registry_id": "vr.tr.hydrogen-sulfide", "name": "hydrogen sulfide", "purpose": "Enable an AI agent to identify hydrogen sulfide, assess its chemical and exposure state, and determine which handling, monitoring or treatment actions require verified controls.", "definition": "Hydrogen sulfide (H₂S) is a molecular compound of hydrogen and sulfur that is a colorless, highly toxic, flammable gas at ordinary ambient temperature and pressure, with a characteristic rotten-egg odor at low concentrations.", "scope_statement": "This model owns hydrogen sulfide as the chemical species H2S and the identity, composition, phase, speciation, reactivity and hazard attributes needed to assess a particular sample or occurrence; it distinguishes those attributes from the properties of a containing product, facility or production process.", "in_scope": [ "Molecular identity, authoritative substance identifiers and distinctions from other sulfur compounds.", "Purity, grade, impurities and hydrogen sulfide concentration in a specified medium.", "Gas, liquid and dissolved states under recorded temperature, pressure and solution conditions.", "Measurements of hydrogen sulfide, including sampling validity and instrument limitations.", "Chemical compatibility, exposure and release hazards, and applicable classification records.", "Formation, movement and transformation of hydrogen sulfide where these affect its current state." ], "out_of_scope": [ "Complete composition and performance models for sour natural gas, biogas, wastewater and other mixtures containing hydrogen sulfide.", "Design and operation of wells, sewers, reactors, gas networks and treatment facilities.", "Medical diagnosis and treatment of exposed individuals.", "Detailed biology of organisms that produce, consume or respond to hydrogen sulfide.", "Construction and maintenance of detectors, ventilation systems and protective equipment.", "Execution of emergency rescue, disposal or industrial production procedures." ], "distinguishing_features": [ "The molecular identity must resolve to H2S, rather than sulfur dioxide, elemental sulfur, an organosulfur compound or a sulfide salt.", "A dissolved measurement must distinguish molecular H2S from hydrosulfide, sulfide ions and any analytically defined total sulfide result.", "A mixture containing H2S remains a mixture; its bulk composition and commercial name do not establish that it is pure hydrogen sulfide.", "An odor report alone does not establish identity, concentration or safe conditions; recognition requires a suitable analytical or documented identity basis.", "A gaseous occurrence, a liquefied inventory and a dissolved occurrence share a substance identity but require different state and quantity descriptions." ], "characteristics": [ { "name": "Chemical identity", "kind": "category", "unit_or_values": "Formula H2S; verified CAS, PubChem and EC identifiers with source and verification date", "why_it_matters": "Connects the material to the correct substance record without confusing related sulfur species or mixtures." }, { "name": "Material grade and composition", "kind": "measurement", "unit_or_values": "Purity as mol%, mass% or another explicit basis; impurity identities and concentrations; grade designation", "why_it_matters": "Determines whether a material meets an intended use and whether impurities alter compatibility or measurement." }, { "name": "Physical state and conditions", "kind": "state", "unit_or_values": "Gas, liquid, dissolved or multiphase; temperature in K or °C; absolute pressure in Pa, kPa or bar", "why_it_matters": "Makes phase descriptions and inventories interpretable and supports assessment of release behavior." }, { "name": "Hydrogen sulfide concentration", "kind": "measurement", "unit_or_values": "Gas: ppmv, mol% or mg/m³; solution: mol/L or mg/L; include medium, temperature, pressure and reporting basis", "why_it_matters": "Separates an actual H2S measurement from incompatible concentration units or aggregate sulfide measurements." }, { "name": "Aqueous speciation conditions", "kind": "measurement", "unit_or_values": "pH, temperature, salinity or ionic strength; measured or calculated H2S fraction with method", "why_it_matters": "Supports interpretation of dissolved sulfide and the potential for molecular H2S to enter a gas phase." }, { "name": "Phase and partition properties", "kind": "measurement", "unit_or_values": "Melting and boiling points in °C or K with pressure; vapor pressure with temperature; solubility and partition constants with explicit conventions", "why_it_matters": "Provides condition-specific evidence for phase changes and transfer between water and gas." }, { "name": "Measurement validity", "kind": "state", "unit_or_values": "Method, calibration status, detection and quantification limits, range, uncertainty, interferences, sample location and timestamp", "why_it_matters": "Prevents an invalid, stale or out-of-range reading from supporting a handling decision." }, { "name": "Hazard and regulatory applicability", "kind": "relation", "unit_or_values": "Links to current classification, safety data, exposure limits and transport records; jurisdiction, physical form and effective date", "why_it_matters": "Ensures that restrictions and thresholds apply to the actual material and location." }, { "name": "Exposure observation", "kind": "measurement", "unit_or_values": "Concentration with duration, averaging period, sampling position and exposure population", "why_it_matters": "Allows an exposure observation to be compared with an appropriately matched reference." } ], "affordances": [ "Resolve a label or analytical result to hydrogen sulfide and flag unresolved identity or composition.", "Compare sample composition and grade with an intended use's documented requirements.", "Interpret H2S concentrations using explicit units, sampling conditions and measurement validity.", "Assess whether changing solution or containment conditions requires renewed evaluation of H2S release.", "Compare observations with verified, applicable hazard criteria and escalate when evidence or controls are inadequate.", "Track hydrogen sulfide through transfer or treatment while distinguishing removal, conversion and relocation." ] }, "sources": [], "structure": { "bundles": [ { "id": "h2s-identity-and-material-boundary", "name": "H2S identity and material boundary", "description": "Establishes what is being identified and whether the record describes the substance, a grade or an occurrence within a mixture.", "rationale": "Hydrogen sulfide, dissolved sulfide and H2S-containing products cannot be treated as interchangeable identities.", "layers": [ { "id": "molecular-and-regulatory-identity", "name": "Molecular and regulatory identity", "description": "Connects H2S identity to independently verified reference records.", "findings": [ { "id": "verified-h2s-identity", "name": "Verified H2S identity", "description": "Record the evidence that establishes hydrogen sulfide identity and the authoritative identifiers attached to it.", "questions": [ { "text": "What label, analytical evidence or reference record establishes that the species is H2S?", "kind": "definition", "id": "verified-h2s-identity-q01" }, { "text": "Which authoritative records verify its CAS number, PubChem CID and EC number, and when were they checked?", "kind": "provenance", "id": "verified-h2s-identity-q02" } ] } ] }, { "id": "grade-and-mixture-boundary", "name": "Grade and mixture boundary", "description": "Separates substance identity from purity specifications and containing materials.", "findings": [ { "id": "composition-qualified-material", "name": "Composition-qualified material", "description": "Describe purity, impurities and concentration without assigning the containing mixture's identity to H2S.", "questions": [ { "text": "Is this pure or technical-grade hydrogen sulfide, a certified gas mixture, or H2S occurring in another material?", "kind": "boundary", "id": "composition-qualified-material-q01" }, { "text": "What purity, water content and other impurities are documented, on which measurement basis?", "kind": "measurement", "id": "composition-qualified-material-q02" } ] } ] } ] }, { "id": "phase-speciation-and-partition", "name": "Phase, speciation and partition", "description": "Describes the conditions governing physical state and the distinction between molecular H2S and other dissolved sulfide species.", "rationale": "A concentration or inventory is insufficient without knowing its phase, chemical form and potential transfer between media.", "layers": [ { "id": "physical-state-envelope", "name": "Physical state envelope", "description": "Records phase and the conditions supporting that assignment.", "findings": [ { "id": "conditioned-phase-properties", "name": "Conditioned phase properties", "description": "Attach pressure, temperature and reference conditions to phase assignments and physical constants.", "questions": [ { "text": "Which phases contain H2S, and what temperature and absolute pressure were measured for each?", "kind": "measurement", "id": "conditioned-phase-properties-q01" }, { "text": "Which read sources establish the applicable melting point, boiling point and vapor-pressure relationship, including their conditions?", "kind": "provenance", "id": "conditioned-phase-properties-q02" } ] } ] }, { "id": "dissolved-speciation-and-gas-transfer", "name": "Dissolved speciation and gas transfer", "description": "Distinguishes aqueous molecular H2S from aggregate sulfide and evaluates transfer to a gas phase.", "findings": [ { "id": "aqueous-h2s-fraction", "name": "Aqueous H2S fraction", "description": "Make explicit whether dissolved H2S is measured directly or inferred from a broader sulfide result.", "questions": [ { "text": "Does the reported value represent molecular H2S, total dissolved sulfide or another operationally defined fraction?", "kind": "definition", "id": "aqueous-h2s-fraction-q01" }, { "text": "What pH, temperature, ionic conditions and equilibrium assumptions support any calculated molecular H2S fraction?", "kind": "measurement", "id": "aqueous-h2s-fraction-q02" }, { "text": "Would a proposed change in pH, temperature, pressure or agitation require reassessing transfer of H2S into the headspace?", "kind": "action", "id": "aqueous-h2s-fraction-q03" } ] } ] } ] }, { "id": "h2s-detection-and-evidence-quality", "name": "H2S detection and evidence quality", "description": "Determines whether gas and liquid observations reliably describe the occurrence being assessed.", "rationale": "Odor, point measurements and aggregate sulfide assays provide different evidence and cannot substitute for one another.", "layers": [ { "id": "sampling-and-analysis", "name": "Sampling and analysis", "description": "Connects the reported analyte and concentration to a suitable sampling and analytical method.", "findings": [ { "id": "representative-h2s-result", "name": "Representative H2S result", "description": "Record where and how the sample was obtained and whether collection or storage could change its H2S content.", "questions": [ { "text": "Where, when and in which medium was H2S sampled, and what spatial or temporal extent does the result represent?", "kind": "measurement", "id": "representative-h2s-result-q01" }, { "text": "How did the method address H2S loss, chemical transformation and interference during sampling, transport and analysis?", "kind": "provenance", "id": "representative-h2s-result-q02" } ] } ] }, { "id": "detector-and-interpretation-limits", "name": "Detector and interpretation limits", "description": "Captures the evidence needed to trust an instrument reading or interpret a non-detection.", "findings": [ { "id": "qualified-detection-status", "name": "Qualified detection status", "description": "Distinguish a valid measurement from an instrument fault, an untested range or a sensory observation.", "questions": [ { "text": "What calibration, functional-check, range and interference evidence supports this detector reading?", "kind": "provenance", "id": "qualified-detection-status-q01" }, { "text": "Does a reported zero mean below a stated detection limit, missing data, instrument failure or a valid quantified result?", "kind": "boundary", "id": "qualified-detection-status-q02" }, { "text": "What additional measurement is required if the only available evidence is an odor report or its absence?", "kind": "action", "id": "qualified-detection-status-q03" } ] } ] } ] }, { "id": "exposure-ignition-and-handling-constraints", "name": "Exposure, ignition and handling constraints", "description": "Links H2S observations and material state to verified hazard criteria and handling prerequisites.", "rationale": "An agent must assess exposure and physical hazards using applicable evidence before recommending an action involving H2S.", "layers": [ { "id": "exposure-criteria-and-observations", "name": "Exposure criteria and observations", "description": "Matches measured exposure to the correct reference and averaging period.", "findings": [ { "id": "applicable-exposure-comparison", "name": "Applicable exposure comparison", "description": "Keep occupational limits, emergency criteria and instrument alarm settings distinct.", "questions": [ { "text": "Which current exposure limits or emergency criteria apply in this jurisdiction and setting, and what sources establish them?", "kind": "provenance", "id": "applicable-exposure-comparison-q01" }, { "text": "Are concentration units, averaging period, sampling location and measurement uncertainty compatible with the proposed comparison?", "kind": "measurement", "id": "applicable-exposure-comparison-q02" }, { "text": "What documented escalation is required when the applicable criterion is exceeded or the exposure state is unknown?", "kind": "action", "id": "applicable-exposure-comparison-q03" } ] } ] }, { "id": "physical-hazards-and-control-prerequisites", "name": "Physical hazards and control prerequisites", "description": "Connects chemical classification, ignition conditions and containment state to permitted handling.", "findings": [ { "id": "evidence-based-handling-constraints", "name": "Evidence-based handling constraints", "description": "Record the specific prerequisites for an intended action using applicable safety and compatibility references.", "questions": [ { "text": "Which verified classifications, flammability data and pressure-related hazards apply to this physical form and composition?", "kind": "provenance", "id": "evidence-based-handling-constraints-q01" }, { "text": "Which verified material-compatibility, containment, ventilation and monitoring requirements apply to the intended transfer or use?", "kind": "action", "id": "evidence-based-handling-constraints-q02" } ] } ] } ] }, { "id": "formation-fate-and-removal", "name": "Formation, fate and removal", "description": "Tracks the origin of an H2S occurrence and what happens to it during release, transport or treatment.", "rationale": "A falling H2S reading can reflect transfer, dilution or chemical conversion; it does not by itself establish that a source or hazard has been eliminated.", "layers": [ { "id": "origin-and-release-context", "name": "Origin and release context", "description": "Links the occurrence to a documented source and conditions that may sustain or renew it.", "findings": [ { "id": "supported-source-attribution", "name": "Supported source attribution", "description": "Distinguish observed H2S from an inferred biological, geological, industrial or stored-material origin.", "questions": [ { "text": "What evidence identifies the source of this H2S occurrence, and which parts of the attribution remain inferred?", "kind": "provenance", "id": "supported-source-attribution-q01" }, { "text": "Which source conditions could sustain or renew H2S accumulation after an initial low reading?", "kind": "boundary", "id": "supported-source-attribution-q02" } ] } ] }, { "id": "transformation-and-treatment-outcome", "name": "Transformation and treatment outcome", "description": "Distinguishes destruction of molecular H2S from capture or movement to another medium.", "findings": [ { "id": "accounted-h2s-fate", "name": "Accounted H2S fate", "description": "Record the evidence for removal and identify residual H2S, sulfur-containing products and transferred inventories.", "questions": [ { "text": "Was H2S chemically converted, captured, diluted or transferred to another phase, and what measurements support that conclusion?", "kind": "measurement", "id": "accounted-h2s-fate-q01" }, { "text": "Which residual materials or changed conditions require follow-up assessment for remaining H2S or renewed release?", "kind": "action", "id": "accounted-h2s-fate-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": [ "This description is recalled knowledge; no sources were consulted.", "Verify current jurisdiction-specific exposure limits, GHS classifications, and transport provisions for the actual supplied product.", "The listed kinds distinguish formulation or grade, not separate molecular species; aqueous composition depends on concentration, temperature, and pH." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of hydrogen sulfide 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": [ "Anhydrous hydrogen sulfide", "Aqueous hydrogen sulfide solutions", "High-purity hydrogen sulfide grades" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of hydrogen sulfide 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": "7783-06-4", "note": "Identifies hydrogen sulfide as a chemical substance." }, { "scheme": "PubChem CID", "value_or_pattern": "402", "note": "Compound identifier for hydrogen sulfide." }, { "scheme": "EC number", "value_or_pattern": "231-977-3", "note": "European chemical inventory identifier." }, { "scheme": "UN number", "value_or_pattern": "1053", "note": "Dangerous-goods transport identifier for hydrogen sulfide; mixtures require their own classification assessment." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of hydrogen sulfide 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 chemical hazards.", "United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations: transport classification framework.", "European Union Classification, Labelling and Packaging (CLP) Regulation: chemical classification and labeling requirements.", "US Occupational Safety and Health Administration (OSHA) Hazard Communication Standard: workplace hazard communication requirements." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of hydrogen sulfide 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": [ "Feedstock for sulfur recovery from sour natural gas and refinery gas streams.", "Reagent for preparing metal sulfides.", "Sulfiding agent for certain industrial catalysts.", "Sulfur precursor in some semiconductor and thin-film manufacturing processes.", "Component of certified gas mixtures used to calibrate hydrogen sulfide detectors." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of hydrogen sulfide 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": "34.08", "unit": "g/mol" }, { "quantity": "Melting point of pure substance", "typical_range": "Approximately -85.5", "unit": "°C" }, { "quantity": "Normal boiling point at approximately 101.3 kPa", "typical_range": "Approximately -60.3", "unit": "°C" }, { "quantity": "Gas density relative to air at the same temperature and pressure", "typical_range": "Approximately 1.19", "unit": "dimensionless" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of hydrogen sulfide 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": [ "Acute inhalation toxicity can cause rapid unconsciousness, respiratory failure, and death.", "Odor is an unreliable warning because exposure can impair the sense of smell.", "Forms flammable mixtures with air; combustion can produce toxic sulfur dioxide.", "Can accumulate in poorly ventilated or low-lying spaces, creating severe confined-space hazards.", "In wet service, can contribute to corrosion, hydrogen damage, and sulfide stress cracking in susceptible metals." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of hydrogen sulfide 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": [ "Occupational exposure limits, averaging periods, and ceiling limits differ between jurisdictions and issuing bodies.", "Hazard communication and transport requirements depend on local implementation and the supplied concentration or formulation." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of hydrogen sulfide 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": "Hydrosulfide ion", "difference": "HS⁻ is the singly deprotonated ionic species; hydrogen sulfide is neutral H₂S." }, { "name": "Sulfide ion", "difference": "S²⁻ is an ionic species with no hydrogen atoms; hydrogen sulfide is a neutral molecular compound." }, { "name": "Sulfur dioxide", "difference": "SO₂ contains sulfur and oxygen and has different chemistry and hazards." }, { "name": "Sour gas", "difference": "Sour gas is a gas mixture containing hydrogen sulfide; it is not the pure substance." }, { "name": "Hydrosulfuric acid", "difference": "This name denotes hydrogen sulfide in aqueous solution, where acid-base speciation matters." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of hydrogen sulfide this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does an existing Vercy world model already own hydrogen sulfide or the relevant chemical-species concept, requiring this registry entry to link to it?", "Which authoritative sources will establish the substance identifiers and condition-specific physical constants for the completed model?", "Which jurisdictions and use settings must be covered by researched GHS classifications, exposure limits and transport requirements?", "Which aqueous speciation and gas-partition references are valid across the temperature, pH and salinity ranges the model must support?", "Which analytical methods, impurity specifications and compatibility references are required for the intended grades and occurrence types?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 19, "questions": 32 } }, "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 sulfide, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to identify hydrogen sulfide, assess its chemical and exposure state, and determine which handling, monitoring or treatment actions require verified controls.", "characteristics": { "substance": "material", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured", "consumed or used up" ], "distinguishingFeatures": [ "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 sulfide, 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": [], "standing": "Described in 75 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one hydrogen sulfide from another, and a hydrogen sulfide 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 sulfide, 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 sulfide, 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 sulfide 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 sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide, 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 sulfide, 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 sulfide 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 sulfide from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide, 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 sulfide, 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 sulfide 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 sulfide is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a hydrogen sulfide 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 sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a hydrogen sulfide performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a hydrogen sulfide at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide 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 sulfide 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 sulfide 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 sulfide 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 sulfide, 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 sulfide 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 sulfide 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 sulfide 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 sulfide, 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 sulfide 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 sulfide and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a hydrogen sulfide, 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 sulfide, 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 sulfide 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 sulfide is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a hydrogen sulfide, 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 sulfide, 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 sulfide 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 } } } }