{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T09:11:50Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 22.2, "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: 01a094e2-115f-7290-9a62-ebef46fc059c\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: dimethylcadmium\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 1001", "usd": 0.0, "recall": true }, "codex": { "seconds": 72.5, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094e2-1170-7173-af80-df791412ff47\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: dimethylcadmium\nRegistry id: vr.tr.dimethylcadmium\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:55:21+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:29+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q27237219", "registryId": "vr.tr.dimethylcadmium", "name": "dimethylcadmium", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q27237219/", "model": { "registry_id": "vr.tr.dimethylcadmium", "name": "dimethylcadmium", "purpose": "Enable an agent to recognise dimethylcadmium, assess the identity and condition of a particular sample, and determine which decisions require verified chemical, safety or regulatory evidence.", "definition": "Dimethylcadmium is an organocadmium compound with formula Cd(CH3)2, containing cadmium in the formal +2 oxidation state bonded to two methyl groups, and occurring as a volatile, highly toxic, air-sensitive liquid near room temperature.", "scope_statement": "This model owns dimethylcadmium as the registered substance vr.tr.dimethylcadmium in PHY / PHY.MAT, including its molecular identity, sample composition, condition-dependent properties, hazards and applicable substance-level controls.", "in_scope": [ "Molecular identity of Cd(CH3)2 and verified chemical identifiers", "Grade, assay, impurities and changes in sample composition", "Physical state and measured properties with temperature, pressure and provenance", "Evidence concerning toxicity, volatility, ignition and chemical incompatibility", "Jurisdiction-specific classification, exposure controls and disposition requirements" ], "out_of_scope": [ "Manufacturing and synthesis procedures", "Commercial formulation, packaging and supplier-product models beyond their relation to the substance", "Equipment design and operational recipes for processes using dimethylcadmium", "Other organocadmium compounds, cadmium metal and inorganic cadmium compounds", "Clinical diagnosis or treatment of an exposed person" ], "distinguishing_features": [ "The assigned molecular structure must contain one cadmium atom bonded to two methyl groups; a cadmium-containing sample alone does not establish dimethylcadmium identity.", "The molecular formula C2H6Cd must agree with the structural assignment and identifiers; formula matching alone is insufficient verification.", "Dimethylcadmium must be distinguished from other dialkylcadmium compounds by the identity of both organic groups.", "A solution containing dimethylcadmium must identify its solvent and concentration rather than inherit the properties of the neat substance.", "A degraded sample must retain a distinction between originally supplied dimethylcadmium and its currently established composition." ], "characteristics": [ { "name": "Molecular identity", "kind": "category", "unit_or_values": "Cd(CH3)2; C2H6Cd; verified structure and synonyms", "why_it_matters": "Separates the registered substance from related cadmium compounds and ambiguous product names." }, { "name": "Registry identifier mapping", "kind": "relation", "unit_or_values": "vr.tr.dimethylcadmium linked to verified CAS, PubChem and EC records where available", "why_it_matters": "Connects property and regulatory evidence to the correct chemical identity." }, { "name": "Sample form", "kind": "category", "unit_or_values": "Neat substance, solution, mixture or composition unresolved", "why_it_matters": "Determines whether substance-level data can describe the actual sample." }, { "name": "Assay and impurity profile", "kind": "measurement", "unit_or_values": "Mass fraction, mole fraction or concentration with basis, analytical method and uncertainty", "why_it_matters": "Distinguishes dimethylcadmium content from total cadmium and identifies composition-dependent limitations." }, { "name": "Physical state", "kind": "state", "unit_or_values": "Observed phase with temperature in K or °C and pressure in Pa or kPa", "why_it_matters": "Makes phase descriptions applicable to a stated condition rather than universally assumed." }, { "name": "Phase-transition properties", "kind": "measurement", "unit_or_values": "Melting and boiling temperatures in K or °C, with pressure and any reported decomposition", "why_it_matters": "Supports interpretation of state changes without confusing boiling with chemical breakdown." }, { "name": "Vapour pressure", "kind": "measurement", "unit_or_values": "Pa or kPa at a specified temperature, with method and source", "why_it_matters": "Supports assessment of potential airborne release from a sample." }, { "name": "Sample integrity", "kind": "state", "unit_or_values": "Verified unchanged, suspected altered, confirmed altered or unknown; dated evidence required", "why_it_matters": "Prevents historical assay or identity information from being treated as current." }, { "name": "Hazard classification", "kind": "category", "unit_or_values": "Verified hazard classes, categories and statements under a named classification system and revision", "why_it_matters": "Separates established classifications from unverified descriptions or inferred cadmium hazards." }, { "name": "Exposure-limit applicability", "kind": "relation", "unit_or_values": "Limit record with jurisdiction, chemical scope, airborne fraction, averaging period and concentration basis", "why_it_matters": "Prevents a limit expressed as cadmium from being misread as a limit expressed as dimethylcadmium." } ], "affordances": [ "Reconcile a supplier label or analytical record with the registered molecular identity.", "Assess whether a sample's grade, composition and evidence meet a declared application requirement.", "Compare physical-property reports after aligning sample form, temperature, pressure and measurement basis.", "Flag missing or contradictory evidence that prevents a handling or use decision.", "Determine which verified substance-specific and cadmium-wide requirements apply to a stated jurisdiction and activity." ], "agent_conduct": { "may": [ "Explain dimethylcadmium's historical role as a precursor for semiconductor materials in general terms.", "Report its severe hazards and the need for specialist containment from safety data sheets." ], "must_not": [ "Handle it outside a specialist facility with containment for toxic, air-sensitive liquids.", "Provide preparation, handling or use procedures to people outside such a facility.", "Release it or cadmium waste into air, water or drains.", "Recommend it where safer precursors are available without stating its hazards." ], "requires_human": [ "Approving purchase, transfer or disposal of the compound." ] }, "ethics": { "considerations": [ "Dimethylcadmium is among the most toxic laboratory chemicals; exposure can be fatal or cause cancer.", "Cadmium contamination persists and harms communities and ecosystems." ], "affected_parties": [ "Laboratory and fab workers", "Emergency responders", "Communities near disposal sites" ] }, "owners": { "steward": "The laboratory or business that holds it; chemical safety authorities regulate supply and use.", "master_systems": [] }, "visual_identification": [ "Identified by container label, chemical name and identifier, and certificate of analysis rather than by appearance alone." ], "failure_modes_and_hazards": [ "Acute and chronic cadmium poisoning.", "Fire on contact with air.", "Long-term cancer risk from exposure." ], "standards_and_regulation": [ "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations." ], "what_it_is_for": [ "Dimethylcadmium is encountered in specialized organometallic research and historical chemical synthesis literature.", "It has served as a methylating reagent and as a precursor for cadmium-containing semiconductor materials, with its extreme toxicity restricting its practical use." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q27237219: dimethylcadmium", "url": "https://www.wikidata.org/wiki/Q27237219", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Dimethylcadmium", "url": "https://en.wikipedia.org/wiki/Dimethylcadmium", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "molecular-identity", "name": "Molecular identity", "description": "Establishes which chemical entity the dimethylcadmium entry denotes.", "rationale": "The agent must distinguish a particular organocadmium molecule from cadmium-containing materials and commercial mixtures.", "layers": [ { "id": "structure-and-names", "name": "Structure and names", "description": "Connects the registered name to its molecular structure and accepted naming variants.", "findings": [ { "id": "two-methyl-cadmium-identity", "name": "Two-methyl cadmium identity", "description": "Record the evidence supporting assignment to Cd(CH3)2 rather than another cadmium species.", "questions": [ { "text": "Which authoritative identity record establishes dimethylcadmium as Cd(CH3)2?", "kind": "definition", "id": "two-methyl-cadmium-identity-q01" }, { "text": "Which structural or analytical evidence distinguishes this sample from other dialkylcadmium compounds?", "kind": "boundary", "id": "two-methyl-cadmium-identity-q02" } ] } ] }, { "id": "identifier-reconciliation", "name": "Identifier reconciliation", "description": "Resolves external identifiers against the substance rather than against a containing product.", "findings": [ { "id": "verified-chemical-crosswalk", "name": "Verified chemical crosswalk", "description": "Maintain sourced mappings between the Vercy entry and applicable chemical registries.", "questions": [ { "text": "Which CAS number, PubChem CID and EC identifier can be verified for this exact substance?", "kind": "provenance", "id": "verified-chemical-crosswalk-q01" }, { "text": "Does each linked record denote dimethylcadmium itself, a solution or a supplier-specific product?", "kind": "boundary", "id": "verified-chemical-crosswalk-q02" } ] } ] } ] }, { "id": "sample-composition-and-integrity", "name": "Sample composition and integrity", "description": "Describes how an actual sample differs from the ideal molecular substance.", "rationale": "Dimethylcadmium content, solvent and chemical alteration determine whether identity and property claims apply to the sample.", "layers": [ { "id": "grade-and-assay", "name": "Grade and assay", "description": "Records declared grade alongside measured composition and analytical limitations.", "findings": [ { "id": "dimethylcadmium-content", "name": "Dimethylcadmium content", "description": "Separate compound-specific assay from total cadmium measurement and supplier grade labels.", "questions": [ { "text": "What fraction of the sample is established as dimethylcadmium, and on what concentration basis?", "kind": "measurement", "id": "dimethylcadmium-content-q01" }, { "text": "Does the analytical method identify intact dimethylcadmium or measure cadmium regardless of chemical species?", "kind": "boundary", "id": "dimethylcadmium-content-q02" }, { "text": "Which solvent and impurities are identified, with what detection limits?", "kind": "measurement", "id": "dimethylcadmium-content-q03" } ] } ] }, { "id": "composition-over-time", "name": "Composition over time", "description": "Connects current sample integrity to dated observations and relevant exposure history.", "findings": [ { "id": "chemical-alteration-evidence", "name": "Chemical alteration evidence", "description": "Record suspected or verified composition changes without assigning unmeasured reaction products.", "questions": [ { "text": "What evidence establishes whether dimethylcadmium remains present at the previously reported assay?", "kind": "measurement", "id": "chemical-alteration-evidence-q01" }, { "text": "Which recorded air, moisture or thermal exposures make reassessment necessary according to a verified source?", "kind": "provenance", "id": "chemical-alteration-evidence-q02" }, { "text": "When does uncertainty about current composition prevent reliance on the original certificate of analysis?", "kind": "action", "id": "chemical-alteration-evidence-q03" } ] } ] } ] }, { "id": "physical-state-and-volatility", "name": "Physical state and volatility", "description": "Organises condition-dependent physical data for neat dimethylcadmium and identified samples.", "rationale": "Phase and vapour behaviour affect recognition, containment assessment and interpretation of measurements.", "layers": [ { "id": "phase-boundaries", "name": "Phase boundaries", "description": "Qualifies phase observations and transition data by sample composition and conditions.", "findings": [ { "id": "qualified-phase-data", "name": "Qualified phase data", "description": "Record melting, boiling and observed phase only with their experimental context.", "questions": [ { "text": "What melting and boiling temperatures are supported by readable sources, and at what pressures?", "kind": "measurement", "id": "qualified-phase-data-q01" }, { "text": "Does each transition report concern neat dimethylcadmium, and does it distinguish phase change from decomposition?", "kind": "boundary", "id": "qualified-phase-data-q02" } ] } ] }, { "id": "vapour-and-bulk-properties", "name": "Vapour and bulk properties", "description": "Captures measurements needed to interpret the behaviour of a specified quantity under stated conditions.", "findings": [ { "id": "conditioned-property-evidence", "name": "Conditioned property evidence", "description": "Retain temperature-dependent vapour pressure and density data with applicability limits.", "questions": [ { "text": "What measured vapour-pressure data or validated correlations exist for dimethylcadmium, and over which temperature range?", "kind": "measurement", "id": "conditioned-property-evidence-q01" }, { "text": "What density value applies to the stated phase, temperature and composition?", "kind": "measurement", "id": "conditioned-property-evidence-q02" }, { "text": "Which proposed comparisons or calculations would extrapolate beyond the source's validated conditions?", "kind": "boundary", "id": "conditioned-property-evidence-q03" } ] } ] } ] }, { "id": "toxicity-and-reactivity-evidence", "name": "Toxicity and reactivity evidence", "description": "Separates health hazards from ignition and chemical-reactivity hazards while preserving evidence scope.", "rationale": "A decision about dimethylcadmium requires both compound-specific evidence and an explicit account of any broader cadmium-based inference.", "layers": [ { "id": "health-hazard-basis", "name": "Health hazard basis", "description": "Tracks exposure routes, reported effects and the chemical scope of supporting evidence.", "findings": [ { "id": "compound-specific-toxicology", "name": "Compound-specific toxicology", "description": "Distinguish findings about dimethylcadmium from findings about cadmium or other cadmium compounds.", "questions": [ { "text": "Which acute and chronic health effects are directly supported for dimethylcadmium, and for which exposure routes?", "kind": "provenance", "id": "compound-specific-toxicology-q01" }, { "text": "Which hazard conclusions rely on cadmium-group classification or read-across rather than direct dimethylcadmium evidence?", "kind": "boundary", "id": "compound-specific-toxicology-q02" } ] } ] }, { "id": "ignition-and-incompatibility", "name": "Ignition and incompatibility", "description": "Records supported ignition, air-reactivity, water-reactivity and incompatibility claims.", "findings": [ { "id": "reactivity-decision-constraints", "name": "Reactivity decision constraints", "description": "Connect each reactivity claim to a source, sample form and documented consequence for permissible actions.", "questions": [ { "text": "Which authoritative sources establish ignition behaviour and reactions with air or water for the relevant sample form?", "kind": "provenance", "id": "reactivity-decision-constraints-q01" }, { "text": "Which contact materials or co-stored chemicals are identified as incompatible, and under what conditions?", "kind": "boundary", "id": "reactivity-decision-constraints-q02" }, { "text": "Which proposed actions require a qualified safety review because the applicable reactivity evidence is missing or conflicting?", "kind": "action", "id": "reactivity-decision-constraints-q03" } ] } ] } ] }, { "id": "regulatory-applicability-and-disposition", "name": "Regulatory applicability and disposition", "description": "Links chemical identity and sample form to current classifications and activity-specific requirements.", "rationale": "Requirements may address dimethylcadmium explicitly, cadmium compounds collectively or a particular mixture.", "layers": [ { "id": "classification-and-exposure-limits", "name": "Classification and exposure limits", "description": "Makes jurisdiction, effective date and concentration basis explicit.", "findings": [ { "id": "applicable-hazard-and-limit-records", "name": "Applicable hazard and limit records", "description": "Record verified classifications and occupational limits without treating them as globally interchangeable.", "questions": [ { "text": "What hazard classification applies under the named jurisdiction and revision, and is it harmonised or supplier-assigned?", "kind": "provenance", "id": "applicable-hazard-and-limit-records-q01" }, { "text": "Does the applicable exposure limit cover dimethylcadmium specifically or a broader cadmium category?", "kind": "boundary", "id": "applicable-hazard-and-limit-records-q02" }, { "text": "What units, averaging period, airborne fraction and cadmium-versus-compound mass basis define that limit?", "kind": "measurement", "id": "applicable-hazard-and-limit-records-q03" } ] } ] }, { "id": "use-transfer-and-disposition", "name": "Use, transfer and disposition", "description": "Relates contemplated activities to verified requirements for the actual substance or mixture.", "findings": [ { "id": "activity-specific-eligibility", "name": "Activity-specific eligibility", "description": "Establish whether sufficient evidence exists to assess a proposed use, transfer or waste disposition.", "questions": [ { "text": "Which current restrictions and transport or waste classifications apply to this sample form in the relevant jurisdictions?", "kind": "provenance", "id": "activity-specific-eligibility-q01" }, { "text": "What composition and identity information must be resolved before the proposed activity can be assessed?", "kind": "action", "id": "activity-specific-eligibility-q02" }, { "text": "Which requirements attach to dimethylcadmium itself and which attach to the containing product or resulting waste?", "kind": "boundary", "id": "activity-specific-eligibility-q03" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This is a recall-based description; no sources were consulted.", "Verify phase-transition temperatures, vapor pressure, purity specifications, and current substance-specific hazard classifications before adding numerical or regulatory detail.", "Check whether applicable occupational limits cover dimethylcadmium specifically or cadmium compounds expressed as cadmium; do not assume these are interchangeable." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of dimethylcadmium 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": "506-82-1", "note": "Identifies dimethylcadmium as a substance, independently of supplier or grade." }, { "scheme": "Molecular formula", "value_or_pattern": "C2H6Cd", "note": "Commonly written Cd(CH3)2 to indicate the two methyl groups bonded to cadmium." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of dimethylcadmium 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) provides the hazard communication framework; legally applicable classifications depend on jurisdiction." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of dimethylcadmium 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": [ "Specialized cadmium precursor for semiconductor thin-film growth, including cadmium telluride.", "Historical organometallic reagent in organic synthesis, including ketone preparation.", "Research on organocadmium bonding and reactivity." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of dimethylcadmium 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": "142.48", "unit": "g/mol" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of dimethylcadmium 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": [ "Extreme toxicity makes vapor inhalation and other exposure routes potentially life-threatening.", "Air exposure can cause spontaneous ignition.", "Reacts with water or moisture, releasing flammable methane.", "Cadmium exposure can cause serious kidney and respiratory injury; cadmium and its compounds are recognized carcinogenic hazards.", "Fire or decomposition can generate toxic cadmium-containing fumes." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of dimethylcadmium 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": [ "Hazard labels, occupational exposure limits, transport requirements, and waste rules depend on national implementation and the supplied formulation." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of dimethylcadmium 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": "Cadmium", "difference": "Cadmium is the metallic element; dimethylcadmium is a molecular compound containing carbon-cadmium bonds." }, { "name": "Diethylcadmium", "difference": "Contains two ethyl groups instead of two methyl groups." }, { "name": "Dimethylzinc", "difference": "Contains zinc in place of cadmium and has distinct physical properties and toxicology." }, { "name": "Dimethylmercury", "difference": "Contains mercury in place of cadmium and is a different organometallic substance with its own exposure behavior." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of dimethylcadmium this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative records verify the CAS, PubChem and EC mappings, and does an existing Vercy world model already cover this exact substance?", "Which primary measurements provide reliable melting point, boiling point, density and vapour-pressure data, including pressure, purity and decomposition qualifications?", "How much of the available toxicological evidence is specific to dimethylcadmium rather than extrapolated from other cadmium compounds?", "Which verified sources establish air, water and thermal reactivity, and how does their applicability change between neat material and solutions?", "Which current jurisdiction-specific classifications, exposure limits, transport requirements and restrictions apply, and are concentrations expressed as cadmium or as dimethylcadmium?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 18, "questions": 34 } }