{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T09:30:48Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 1,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-05T16:30:00Z",
      "ingestedAt": "2026-10-05T13:24:01+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:59+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q41581",
    "registryId": "vr.tr.alkane",
    "name": "alkane",
    "version": "0.2.0-wave.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q41581/",
  "model": {
    "registry_id": "vr.tr.alkane",
    "name": "alkane",
    "purpose": "Let an agent handle alkanes by chain length, properties, uses, hazards and naming.",
    "definition": "A saturated acyclic hydrocarbon with the general formula CnH2n+2, such as methane, ethane, propane and butane; the main components of natural gas and many fuels.",
    "what_it_is_for": "Fuels, solvents, waxes and chemical feedstocks.",
    "affordances": [
      "name alkanes by IUPAC rules",
      "compare boiling points by chain length",
      "check flammability and handling rules",
      "identify uses as fuels or feedstocks"
    ],
    "distinguishing_features": [
      "Only single bonds",
      "Relatively unreactive except in combustion",
      "Boiling point rises with chain length",
      "Straight and branched isomers"
    ],
    "appearance": "Gases for short chains, liquids for medium chains and waxy solids for long chains; colourless.",
    "visual_identification": [
      "General formula CnH2n+2",
      "Names ending in -ane",
      "Cycloalkanes have rings and a different formula"
    ],
    "physical_properties": [
      {
        "quantity": "methane boiling point",
        "typical_range": "about -162",
        "unit": "degC",
        "note": ""
      },
      {
        "quantity": "state at room temperature",
        "typical_range": "gas up to C4, liquid about C5-C17",
        "unit": "",
        "note": "approximate"
      }
    ],
    "families_and_kinds": [
      "gaseous alkanes",
      "liquid alkanes",
      "paraffin waxes",
      "branched alkanes",
      "isomers"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "aliphatic hydrocarbon",
        "why": "category"
      },
      {
        "relation": "includes",
        "target": "methane and propane",
        "why": "members"
      },
      {
        "relation": "is found in",
        "target": "natural gas and petroleum",
        "why": "source"
      },
      {
        "relation": "is contrasted with",
        "target": "alkene",
        "why": "unsaturated"
      }
    ],
    "identifiers": [
      {
        "scheme": "CAS number",
        "value_or_pattern": "per compound",
        "note": "registry"
      },
      {
        "scheme": "IUPAC name",
        "value_or_pattern": "systematic",
        "note": "nomenclature"
      }
    ],
    "standards_and_regulation": [
      "IUPAC nomenclature",
      "CLP and GHS classification",
      "ATEX rules for explosive atmospheres"
    ],
    "failure_modes_and_hazards": [
      "Fire and explosion",
      "Asphyxiation in enclosed spaces",
      "Carbon monoxide from incomplete combustion"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Describe alkanes, their properties and uses from chemical references.",
        "Report safety data from official sources."
      ],
      "must_not": [
        "Assist anyone in using flammable gases or fuels to cause harm.",
        "Store or handle them near ignition sources or in unventilated spaces.",
        "Misstate their flammability or hazards.",
        "Vent them where they can cause asphyxiation or explosion."
      ],
      "requires_human": [
        "Handling bulk flammable gases or fuels."
      ]
    },
    "ethics": {
      "considerations": [
        "Gas leaks cause fires, explosions and asphyxiation.",
        "Burning alkane fuels drives climate change."
      ],
      "affected_parties": [
        "Workers and households",
        "Bystanders",
        "The climate"
      ]
    },
    "owners": {
      "steward": "The person or business that holds it; fire and safety authorities regulate storage.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q41581: alkane",
      "url": "https://www.wikidata.org/wiki/Q41581",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Alkane",
      "url": "https://en.wikipedia.org/wiki/Alkane",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "structure",
        "name": "Structure",
        "description": "Which alkane.",
        "rationale": "Chain length decides properties.",
        "layers": [
          {
            "id": "name",
            "name": "Name",
            "description": "IUPAC.",
            "findings": [
              {
                "id": "name-finding",
                "name": "Name",
                "description": "Name and formula.",
                "questions": [
                  {
                    "text": "What is the IUPAC name and formula?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is it straight-chain or branched?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "isomers",
            "name": "Isomers",
            "description": "Branching.",
            "findings": [
              {
                "id": "isomers-finding",
                "name": "Isomers",
                "description": "Isomers.",
                "questions": [
                  {
                    "text": "How many isomers does this formula have?",
                    "kind": "measurement"
                  },
                  {
                    "text": "How do their properties differ?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "properties",
        "name": "Properties",
        "description": "Physical data.",
        "rationale": "Properties guide use.",
        "layers": [
          {
            "id": "physical",
            "name": "Physical",
            "description": "Boiling point.",
            "findings": [
              {
                "id": "physical-finding",
                "name": "Physical",
                "description": "Physical properties.",
                "questions": [
                  {
                    "text": "What are its boiling point and density?",
                    "kind": "measurement"
                  },
                  {
                    "text": "From which data source?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "reactivity",
            "name": "Reactivity",
            "description": "Combustion.",
            "findings": [
              {
                "id": "reactivity-finding",
                "name": "Reactivity",
                "description": "Reactivity.",
                "questions": [
                  {
                    "text": "What does complete combustion produce?",
                    "kind": "definition"
                  },
                  {
                    "text": "When does incomplete combustion occur?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "safety",
        "name": "Safety",
        "description": "Hazards.",
        "rationale": "Alkanes are flammable.",
        "layers": [
          {
            "id": "fire",
            "name": "Fire",
            "description": "Flammability.",
            "findings": [
              {
                "id": "fire-finding",
                "name": "Fire",
                "description": "Fire hazard.",
                "questions": [
                  {
                    "text": "What are its flash point and explosive limits?",
                    "kind": "measurement"
                  },
                  {
                    "text": "What storage rules apply?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "leaks",
            "name": "Leaks",
            "description": "Gas leaks.",
            "findings": [
              {
                "id": "leaks-finding",
                "name": "Leaks",
                "description": "Gas leaks.",
                "questions": [
                  {
                    "text": "What should someone do if they smell gas?",
                    "kind": "action"
                  },
                  {
                    "text": "Which emergency number applies?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "uses",
        "name": "Uses",
        "description": "Applications.",
        "rationale": "Uses depend on chain length.",
        "layers": [
          {
            "id": "fuels",
            "name": "Fuels",
            "description": "Gas and liquids.",
            "findings": [
              {
                "id": "fuels-finding",
                "name": "Fuels",
                "description": "Fuel uses.",
                "questions": [
                  {
                    "text": "Which fuel is this alkane part of?",
                    "kind": "definition"
                  },
                  {
                    "text": "What is its energy content?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          },
          {
            "id": "industry",
            "name": "Industry",
            "description": "Feedstocks.",
            "findings": [
              {
                "id": "industry-finding",
                "name": "Industry",
                "description": "Industrial uses.",
                "questions": [
                  {
                    "text": "How is it used as a chemical feedstock or solvent?",
                    "kind": "definition"
                  },
                  {
                    "text": "What alternatives exist?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should each alkane be a separate entry?",
    "How should isomers be linked?",
    "How should fuel grades be linked?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}