{ "model": { "rank": 6501, "code": "thing-q189090", "model_id": "vr.tr.phosgene", "name": "phosgene", "purpose": "Enable an AI agent to recognise phosgene, assess evidence about its physical and containment state, and determine which handling decisions require verified controls or specialist intervention.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q189090/", "tier": 2, "score": 60, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 60, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q189090", "url": "https://www.wikidata.org/wiki/Q189090", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T14:56:37Z", "providers": [ "Codex", "Grok" ], "missingProviders": [], "pass": 2, "cost": { "grok": { "usd": 0.00352478, "turns": 1, "seconds": 49.3, "error": null }, "codex": { "seconds": 104.4, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\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: 01a07c5d-71a4-7902-9ba6-2c47ca50fa3e\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: phosgene\nRegistry id: vr.tr.phosgene\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy" } } }, "metaModel": { "id": "THING-Q189090", "registryId": "vr.tr.phosgene", "name": "phosgene", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q189090/", "model": { "registry_id": "vr.tr.phosgene", "name": "phosgene", "purpose": "Enable an AI agent to recognise phosgene, assess evidence about its physical and containment state, and determine which handling decisions require verified controls or specialist intervention.", "definition": "Phosgene is carbonyl dichloride (COCl_{2}), a reactive acylating gas used as an industrial intermediate and historically as a chemical-warfare choking agent.", "scope_statement": "This model owns the identity and decision-relevant material state of phosgene under vr.tr.phosgene in PHY / PHY.MAT, including its presence in mixtures and releases, while linking to separate models for equipment, processes, exposure incidents and permissions.", "in_scope": [ "Chemical identity and evidence that a material contains phosgene", "Phosgene quantity, concentration, composition and physical state", "Containment condition and evidence of release", "Chemical compatibility and evidence of transformation", "Detection reliability and exposure-relevant observations", "Material-specific prerequisites for handling and disposition" ], "out_of_scope": [ "Manufacturing recipes, reaction optimisation and production equipment design", "Cylinder, valve, ventilation and detector engineering models", "Clinical diagnosis, patient records and treatment protocols", "Full atmospheric dispersion and emergency incident management", "Legal instruments, permits and organisational authorisation systems", "Independent identities of related chemicals and transformation products" ], "distinguishing_features": [ "Require identity evidence consistent with carbonyl dichloride, COCl2, CAS 75-44-5; a chlorine-containing gas label alone is insufficient. [NIOSH Pocket Guide](https://www.cdc.gov/niosh/npg/npgd0504.html)", "Require compound-specific evidence when distinguishing phosgene from chlorine, hydrogen chloride or other irritant gases; record whether the method can resolve the suspected alternatives.", "Resolve names such as phosgene oxime, diphosgene and triphosgene through their own chemical identifiers before accepting any claimed equivalence with this entry.", "Check reported phase against temperature, pressure and composition: phosgene can be present as gas or liquefied compressed material, so a liquid observation alone does not exclude it. [NIOSH Pocket Guide](https://www.cdc.gov/niosh/npg/npgd0504.html)", "Reject smell or absence of immediate irritation as an identification or clearance test; phosgene's sensory warning is unreliable. [CDC Phosgene Fact Sheet](https://www.cdc.gov/chemical-emergencies/chemical-fact-sheets/phosgene.html)" ], "characteristics": [ { "name": "Identity confidence", "kind": "state", "unit_or_values": "suspected | supplier-declared | analytically-supported | disputed", "why_it_matters": "Separates an unverified label or alarm from evidence sufficient to identify phosgene." }, { "name": "Material context", "kind": "category", "unit_or_values": "bulk substance | mixture constituent | process residue | environmental detection", "why_it_matters": "Determines whether subsequent observations describe an inventory, a host mixture or a sampled location." }, { "name": "Phosgene content", "kind": "measurement", "unit_or_values": "mol fraction, mass fraction or concentration with matrix, basis, uncertainty and timestamp", "why_it_matters": "Prevents confusion between mixture composition and airborne exposure concentration." }, { "name": "Phosgene inventory", "kind": "measurement", "unit_or_values": "kg or mol, with measured or estimated basis and uncertainty", "why_it_matters": "Supports inventory reconciliation and assessment of potentially unaccounted material." }, { "name": "Physical state", "kind": "state", "unit_or_values": "gas | liquid | gas-liquid coexistence | dissolved | other verified state | unknown", "why_it_matters": "Changes which containment, contact and release considerations apply." }, { "name": "Material temperature", "kind": "measurement", "unit_or_values": "K or degrees Celsius, with location and timestamp", "why_it_matters": "Provides context for phase and pressure observations." }, { "name": "Containment pressure", "kind": "measurement", "unit_or_values": "kPa absolute, or explicitly identified gauge pressure", "why_it_matters": "Allows meaningful interpretation of containment state without confusing pressure conventions." }, { "name": "Airborne phosgene observation", "kind": "measurement", "unit_or_values": "ppm by volume or mg/m3, with sampling interval, location, detection limit and conversion conditions", "why_it_matters": "Supports comparison with a matching exposure criterion while preserving measurement limitations." }, { "name": "Containment assessment", "kind": "state", "unit_or_values": "verified within stated test scope | suspected leak | confirmed release | unknown", "why_it_matters": "Prevents an unchecked vessel or stale inspection from being treated as verified containment." }, { "name": "Moisture contact", "kind": "state", "unit_or_values": "excluded by evidence | suspected | confirmed | unknown", "why_it_matters": "Phosgene reacts with water to form hydrochloric acid and carbon dioxide; contact changes the material assessment. [NIOSH Pocket Guide](https://www.cdc.gov/niosh/npg/npgd0504.html)" }, { "name": "Containing system", "kind": "relation", "unit_or_values": "Links to vessel, process segment, host mixture or sampled environment", "why_it_matters": "Connects material observations to the physical boundary they actually describe." }, { "name": "Applicable handling basis", "kind": "relation", "unit_or_values": "Links to current material-specific procedure, responsible authority and evidence of prerequisites", "why_it_matters": "Makes proposed handling decisions conditional on an applicable, reviewable basis." } ], "affordances": [ "Reconcile phosgene identifiers and flag ambiguous names for review.", "Associate phosgene observations with a specific inventory, mixture or sampled environment.", "Assess phase and containment evidence for inconsistencies or missing context.", "Interpret phosgene monitoring results with their detection limits and sampling coverage.", "Flag suspected release or exposure for the applicable specialist response.", "Assess whether documented prerequisites support proposed handling or disposition, and record unresolved conditions." ] }, "sources": [], "structure": { "bundles": [ { "id": "phosgene-identity", "name": "Phosgene identity", "description": "Establish what supports identifying the material as phosgene.", "rationale": "Similar names and nonspecific gas observations can otherwise attach phosgene decisions to a different substance.", "layers": [ { "id": "chemical-identity", "name": "Chemical identity", "description": "Resolve the substance independently of labels and informal names.", "findings": [ { "id": "identity-evidence", "name": "Identity evidence", "description": "Record the identifiers and evidence supporting or contradicting identification as phosgene.", "questions": [ { "text": "Which chemical identifiers establish that the referenced substance is phosgene?", "kind": "definition", "id": "identity-evidence-q01" }, { "text": "Does the identification come from a supplier record, analytical result or unconfirmed report?", "kind": "provenance", "id": "identity-evidence-q02" } ] } ] }, { "id": "related-name-boundaries", "name": "Related-name boundaries", "description": "Prevent related chemicals and ambiguous synonyms from being treated as the same registered thing.", "findings": [ { "id": "name-resolution", "name": "Name resolution", "description": "Treat a reported name as a claim to resolve, preserving disagreement between sources.", "questions": [ { "text": "Does a source using phosgene, phosgene oxime, diphosgene or triphosgene specify a matching chemical identifier?", "kind": "boundary", "id": "name-resolution-q01" }, { "text": "Which source supports each accepted synonym, and does another source contradict that mapping?", "kind": "provenance", "id": "name-resolution-q02" } ] } ] } ] }, { "id": "composition-and-phase", "name": "Composition and phase", "description": "Describe how much phosgene is present and in what material state.", "rationale": "A bulk inventory, a solution and a trace gas detection need different interpretations.", "layers": [ { "id": "material-composition", "name": "Material composition", "description": "Separate phosgene content from total mixture quantity.", "findings": [ { "id": "content-and-inventory", "name": "Content and inventory", "description": "Record quantity and composition without presenting estimates as direct measurements.", "questions": [ { "text": "What quantity or fraction of phosgene is established, with what uncertainty and measurement basis?", "kind": "measurement", "id": "content-and-inventory-q01" }, { "text": "Does that value describe phosgene itself, the whole mixture or a sampled atmosphere?", "kind": "boundary", "id": "content-and-inventory-q02" } ] } ] }, { "id": "phase-conditions", "name": "Phase conditions", "description": "Connect observed physical state to its actual conditions.", "findings": [ { "id": "phase-consistency", "name": "Phase consistency", "description": "Record temperature, pressure and mixture context alongside any phase assignment.", "questions": [ { "text": "What phase is observed, and what simultaneous temperature and pressure measurements support it?", "kind": "measurement", "id": "phase-consistency-q01" }, { "text": "Is the phase assignment based on pure phosgene data or evidence applicable to this mixture?", "kind": "provenance", "id": "phase-consistency-q02" } ] } ] } ] }, { "id": "containment-and-release", "name": "Containment and release", "description": "Connect the phosgene inventory to evidence about confinement and escape.", "rationale": "Material remaining inside a system and material detected outside it must not share an undifferentiated state.", "layers": [ { "id": "containment-boundary", "name": "Containment boundary", "description": "Identify the equipment boundary and the limits of its verification.", "findings": [ { "id": "containment-evidence", "name": "Containment evidence", "description": "Associate a containment assessment with a specific boundary, test and time.", "questions": [ { "text": "Which vessel or process segment currently contains the recorded phosgene inventory?", "kind": "boundary", "id": "containment-evidence-q01" }, { "text": "What inspection or monitoring evidence supports its containment assessment, and when was it obtained?", "kind": "provenance", "id": "containment-evidence-q02" } ] } ] }, { "id": "release-observations", "name": "Release observations", "description": "Track evidence of escaped phosgene without claiming a complete dispersion assessment.", "findings": [ { "id": "release-extent", "name": "Release extent", "description": "Preserve the spatial and temporal limits of release observations; heavier-than-air behaviour makes low areas relevant. [CDC Phosgene Fact Sheet](https://www.cdc.gov/chemical-emergencies/chemical-fact-sheets/phosgene.html)", "questions": [ { "text": "Where and when was phosgene detected outside containment, and which nearby areas remain unmeasured?", "kind": "measurement", "id": "release-extent-q01" }, { "text": "What evidence distinguishes a continuing release from residual contamination or an unresolved alarm?", "kind": "boundary", "id": "release-extent-q02" } ] } ] } ] }, { "id": "compatibility-and-transformation", "name": "Compatibility and transformation", "description": "Represent contact conditions that may change phosgene or compromise its containing system.", "rationale": "A nominal phosgene inventory can become chemically altered, and disappearance of the parent substance does not establish a harmless remainder.", "layers": [ { "id": "contact-compatibility", "name": "Contact compatibility", "description": "Connect wetted materials and co-present chemicals to applicable compatibility evidence.", "findings": [ { "id": "compatibility-basis", "name": "Compatibility basis", "description": "Record phosgene-specific compatibility evidence for the actual contact conditions.", "questions": [ { "text": "Which equipment materials, contaminants and co-present chemicals can contact this phosgene?", "kind": "boundary", "id": "compatibility-basis-q01" }, { "text": "Which evidence supports their compatibility at the recorded composition, moisture level and temperature?", "kind": "provenance", "id": "compatibility-basis-q02" } ] } ] }, { "id": "transformation-status", "name": "Transformation status", "description": "Distinguish suspected reaction from verified changes in composition.", "findings": [ { "id": "residual-material", "name": "Residual material", "description": "Track remaining phosgene and link identified products to their own material models.", "questions": [ { "text": "What measurements establish residual phosgene and the composition of the resulting material?", "kind": "measurement", "id": "residual-material-q01" }, { "text": "What evidence is required before replacing the phosgene inventory assessment with a transformed-mixture assessment?", "kind": "boundary", "id": "residual-material-q02" } ] } ] } ] }, { "id": "detection-and-exposure", "name": "Detection and exposure", "description": "Interpret phosgene measurements and preserve uncertainty relevant to possible exposure.", "rationale": "A nondetection, an unspecific alarm and an absence of symptoms convey different information.", "layers": [ { "id": "measurement-validity", "name": "Measurement validity", "description": "Determine what a phosgene measurement can actually establish.", "findings": [ { "id": "detector-interpretation", "name": "Detector interpretation", "description": "Record selectivity, calibration, detection limits, sampling interval and coverage with each result.", "questions": [ { "text": "Can the measurement method distinguish phosgene from the other substances expected in this environment?", "kind": "measurement", "id": "detector-interpretation-q01" }, { "text": "Do its detection limit, calibration status and sampling coverage support the proposed interpretation of a nondetection?", "kind": "boundary", "id": "detector-interpretation-q02" } ] } ] }, { "id": "exposure-context", "name": "Exposure context", "description": "Link material observations to a possible exposure without taking ownership of clinical conclusions.", "findings": [ { "id": "exposure-timeline", "name": "Exposure timeline", "description": "Preserve suspected exposure timing because serious effects can be delayed despite initially mild or absent symptoms. [CDC Phosgene Fact Sheet](https://www.cdc.gov/chemical-emergencies/chemical-fact-sheets/phosgene.html)", "questions": [ { "text": "What exposure route, time interval and concentration evidence can be linked to the incident?", "kind": "measurement", "id": "exposure-timeline-q01" }, { "text": "Which clinical or emergency-response model must receive the suspected exposure record despite an initially symptom-free report?", "kind": "action", "id": "exposure-timeline-q02" } ] } ] } ] }, { "id": "handling-and-disposition", "name": "Handling and disposition", "description": "Connect proposed actions to phosgene-specific prerequisites and verified outcomes.", "rationale": "Knowing the chemical identity does not establish that a particular operation or clearance decision is supported.", "layers": [ { "id": "action-prerequisites", "name": "Action prerequisites", "description": "Evaluate the documented basis for a proposed operation involving phosgene.", "findings": [ { "id": "handling-decision", "name": "Handling decision", "description": "Record whether the proposed action has an applicable procedure, responsible authority and current evidence of required controls.", "questions": [ { "text": "Which current phosgene-specific procedure and authorisation apply to the proposed operation?", "kind": "provenance", "id": "handling-decision-q01" }, { "text": "Which required containment, monitoring and compatibility conditions are verified, missing or failed?", "kind": "action", "id": "handling-decision-q02" } ] } ] }, { "id": "disposition-verification", "name": "Disposition verification", "description": "Require evidence for transfer, treatment or clearance claims.", "findings": [ { "id": "closure-evidence", "name": "Closure evidence", "description": "Keep material disposition separate from atmospheric clearance and equipment decontamination.", "questions": [ { "text": "What records account for phosgene transferred, remaining or verified as transformed?", "kind": "provenance", "id": "closure-evidence-q01" }, { "text": "Does the closure evidence establish material disposition, atmospheric clearance, equipment decontamination or only one of these?", "kind": "boundary", "id": "closure-evidence-q02" }, { "text": "Who may accept the outcome under the applicable procedure, and what unresolved evidence prevents closure?", "kind": "action", "id": "closure-evidence-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-kinds", "name": "Kinds and varieties", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "industrial phosgene (bulk carbonyl dichloride for isocyanates, polycarbonates and agrochemicals)", "chemical-warfare agent phosgene (choking/pulmonary agent, CWC Schedule 3)", "in situ generated phosgene (from chloroform photo-oxidation, chlorinated-solvent pyrolysis, or triphosgene/diphosgene release)", "laboratory reagent phosgene (solutions in toluene or generated from triphosgene)", "phosgene as a process impurity (trace COCl_{2} in chlorinated organics and combustion off-gas)" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "scheme": "CAS Registry Number", "value_or_pattern": "75-44-5", "note": "primary chemical identity" }, { "scheme": "IUPAC name", "value_or_pattern": "carbonyl dichloride", "note": "preferred IUPAC name; also carbonic dichloride" }, { "scheme": "PubChem CID", "value_or_pattern": "6371", "note": "NCBI PubChem compound" }, { "scheme": "Wikidata", "value_or_pattern": "Q189439", "note": "Wikidata item for phosgene" }, { "scheme": "UN number", "value_or_pattern": "UN 1076", "note": "dangerous-goods transport" }, { "scheme": "EC / EINECS", "value_or_pattern": "200-870-3", "note": "European Community number" }, { "scheme": "CWC schedule", "value_or_pattern": "Schedule 3A(03) phosgene (carbonyl dichloride)", "note": "OPCW Chemical Weapons Convention" } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "OPCW Chemical Weapons Convention - Schedule 3 toxic chemical (phosgene / carbonyl dichloride), with declaration and production-facility thresholds", "UN Recommendations on the Transport of Dangerous Goods - UN 1076, Class 2.3 (toxic gas) with subsidiary corrosive hazard", "OSHA / NIOSH occupational exposure limits for phosgene in workplace air (US)", "EU CLP / REACH classification as a toxic gas (Acute Tox. 2 inhalation; Skin Corr.) and listed substance controls", "national chemical-weapons implementation acts that transpose CWC Schedule 3 controls" ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "feedstock for methylene diphenyl diisocyanate (MDI) and toluene diisocyanate (TDI) used in polyurethanes", "intermediate in polycarbonate and chloroformate / acid-chloride manufacture", "historical World War I choking agent and still a CWC-scheduled dual-use chemical", "unwanted product of chloroform left in sunlight, of chlorinated-hydrocarbon fires, and of some refrigerant or solvent thermal decomposition", "laboratory acylating reagent, often replaced by triphosgene or diphosgene for safer handling" ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "quantity": "boiling point (1 atm)", "typical_range": "8.2 to 8.3", "unit": "°C" }, { "quantity": "melting point", "typical_range": "-128 to -118", "unit": "°C" }, { "quantity": "molar mass", "typical_range": "98.92", "unit": "g·mol⁻¹" }, { "quantity": "vapour density (air = 1)", "typical_range": "about 3.4", "unit": "dimensionless" }, { "quantity": "NIOSH REL / OSHA PEL (workplace air, 8-hour TWA)", "typical_range": "0.1", "unit": "ppm" }, { "quantity": "NIOSH IDLH", "typical_range": "2", "unit": "ppm" }, { "quantity": "odour threshold (musty hay / cut-corn; unreliable as a warning)", "typical_range": "0.4 to 1.5", "unit": "ppm" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "delayed non-cardiogenic pulmonary edema after a latent period of hours, including after an initially mild exposure", "hydrolysis with moisture to hydrogen chloride and carbon dioxide, causing corrosion of plant, cylinders and airways", "cylinder or process leak of a denser-than-air toxic gas that pools in low areas", "generation in fires involving chlorinated solvents, refrigerants or plastics, surprising firefighters", "odour fade and olfactory fatigue, so smell is not a safe exposure indicator", "incompatible with water, alcohols, amines and many metals; violent reaction with moisture in confined systems" ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "English 'phosgene' vs IUPAC 'carbonyl dichloride'; older literature 'carbonyl chloride' or 'chloroformyl chloride'", "CWC Schedule 3 declaration thresholds and licensing differ by State Party implementing legislation", "occupational limits are not identical: US OSHA PEL 0.1 ppm TWA; some jurisdictions use lower STEL or ceiling values", "industrial production is concentrated in a few isocyanate/polycarbonate plants (historically Germany, US, China, Japan) rather than widely distributed merchant gas" ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "name": "chlorine", "difference": "Cl₂ is yellow-green with an immediately irritating odour; phosgene is colourless, smells of musty hay, and pulmonary injury is typically delayed. Detector tubes / IR / GC distinguish COCl₂ from Cl₂." }, { "name": "diphosgene (trichloromethyl chloroformate)", "difference": "diphosgene is a liquid (bp ~128 °C) that can release phosgene; GC-MS or ¹³C NMR and physical state separate the two." }, { "name": "triphosgene (bis(trichloromethyl) carbonate)", "difference": "solid crystalline surrogate used in labs; it is not phosgene until decomposed. Melting point and absence of free COCl₂ vapour (until heated or wet) separate them." }, { "name": "phosgene oxime (CX, dichloroformoxime)", "difference": "a vesicant/nettle agent (CWC Schedule 1), not an acyl chloride; different CAS (1794-86-1) and clinical picture (immediate pain vs delayed edema)." }, { "name": "chloroform", "difference": "CHCl₃ is a liquid anaesthetic solvent; phosgene is a gas. Chloroform photo-oxidises to phosgene - the parent solvent is identified by GC and the absence of immediate COCl₂ toxicity." }, { "name": "hydrogen chloride / hydrochloric acid mist", "difference": "HCl causes immediate upper-airway burn; phosgene often spares the upper airway at modest doses and injures alveoli later. Specific phosgene colorimetric/IR methods vs chloride ion tests." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of phosgene this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does an existing Vercy world model already own phosgene or the same chemical concept, requiring this registry entry to link to it?", "Which analytical methods provide adequate selectivity and detection limits for the intended matrices, including relevant cross-interferences?", "Which authoritative property and compatibility sources should govern pure phosgene and the actual mixtures represented by this model?", "How should differing published delayed-effect intervals be represented and linked to the applicable clinical protocol? The current CDC fact sheet describes delays up to 48 hours, while the older NIOSH emergency card includes up to 72 hours. [CDC Fact Sheet](https://www.cdc.gov/chemical-emergencies/chemical-fact-sheets/phosgene.html) [NIOSH Emergency Card](https://www.cdc.gov/niosh/ershdb/emergencyresponsecard_29750023.html)", "Which current jurisdictional requirements and site procedures govern handling, exposure comparisons, disposition and clearance for each intended deployment?" ], "statistics": { "bundles": 7, "layers": 13, "findings": 20, "questions": 33 } }, "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 phosgene, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to recognise phosgene, assess evidence about its physical and containment state, and determine which handling decisions require verified controls or specialist intervention.", "characteristics": { "substance": "material", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured", "consumed or used up" ], "distinguishingFeatures": [ "Described in 60 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 phosgene, 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 60 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 phosgene from another, and a phosgene 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 phosgene, 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 phosgene, 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 phosgene 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 phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene, 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 phosgene, 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 phosgene 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 phosgene from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene, 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 phosgene, 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 phosgene 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 phosgene is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a phosgene, 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 phosgene, 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 phosgene 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 phosgene is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a phosgene, 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 phosgene, 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 phosgene 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 phosgene, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a phosgene 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 phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a phosgene performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a phosgene, 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 phosgene, 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 phosgene 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 phosgene.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a phosgene at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a phosgene, 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 phosgene, 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 phosgene 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 phosgene there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a phosgene, 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 phosgene, 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 phosgene 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 phosgene 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 phosgene 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 phosgene 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 phosgene 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 phosgene, 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 phosgene 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 phosgene 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 phosgene 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 phosgene, 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 phosgene 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 phosgene and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a phosgene, 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 phosgene, 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 phosgene 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 phosgene is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a phosgene, 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 phosgene, 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 phosgene 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 } } } }