{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.alkane","code":"thing-q41581","url":"https://ver.cy/models/thing/q41581/","name":"alkane","alternateNames":["(2H4)methane","hentetracontane","propane","undecane","dodecane","tetradecane","pentadecane","hexadecane","heptadecane","octadecane","nonadecane","icosane"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"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.","purpose":"Let an agent handle alkanes by chain length, properties, uses, hazards and naming.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Only single bonds","Relatively unreactive except in combustion","Boiling point rises with chain length","Straight and branched isomers"],"structure":{"bundles":[{"id":"structure","name":"Structure","description":"Which alkane.","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.","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.","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.","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"}]}]}]}]},"agentConduct":{"may":["Describe alkanes, their properties and uses from chemical references.","Report safety data from official sources."],"mustNot":["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."],"requiresHuman":["Handling bulk flammable gases or fuels."]},"ethics":{"considerations":["Gas leaks cause fires, explosions and asphyxiation.","Burning alkane fuels drives climate change."],"affectedParties":["Workers and households","Bystanders","The climate"]},"owners":{"steward":"The person or business that holds it; fire and safety authorities regulate storage.","roles":[],"masterSystems":[]},"relations":[{"target":"Q2700049","type":"parent","note":"registry parent class"},{"target":"Q344942","type":"parent","note":"registry parent class"},{"target":"Q47165582","type":"parent","note":"registry parent class"},{"target":"aliphatic hydrocarbon","type":"related","note":"category"},{"target":"methane and propane","type":"related","note":"members"},{"target":"natural gas and petroleum","type":"related","note":"source"},{"target":"alkene","type":"related","note":"unsaturated"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.alkane","Wikidata: Q41581 (https://www.wikidata.org/wiki/Q41581)","CAS number: per compound registry","IUPAC name: systematic nomenclature"]},"properties":{"applicability":"required","items":["methane boiling point: about -162 degC","state at room temperature: gas up to C4, liquid about C5-C17 - approximate"]},"recognition":{"applicability":"required","items":["General formula CnH2n+2","Names ending in -ane","Cycloalkanes have rings and a different formula","Gases for short chains, liquids for medium chains and waxy solids for long chains; colourless."]},"capabilities":{"applicability":"required","items":["name alkanes by IUPAC rules","compare boiling points by chain length","check flammability and handling rules","identify uses as fuels or feedstocks"]},"hazards":{"applicability":"required","items":["Fire and explosion","Asphyxiation in enclosed spaces","Carbon monoxide from incomplete combustion"]},"interfaces":{"applicability":"required","items":["IUPAC nomenclature","CLP and GHS classification","ATEX rules for explosive atmospheres"]},"context":{"applicability":"required","items":["Fuels, solvents, waxes and chemical feedstocks.","gaseous alkanes","liquid alkanes","paraffin waxes","branched alkanes","isomers"]}},"sources":[{"title":"Wikidata item Q41581: alkane","url":"https://www.wikidata.org/wiki/Q41581","note":"identity and sense of the item"},{"title":"Wikipedia: Alkane","url":"https://en.wikipedia.org/wiki/Alkane","note":"general description of the item"}],"openQuestions":["Should each alkane be a separate entry?","How should isomers be linked?","How should fuel grades be linked?"],"resources":{"spec":"/models/things/publications/thing-q41581/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q41581/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T09:30:48Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:59+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}