{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.carbon-compound","code":"thing-q2901852","url":"https://ver.cy/models/thing/q2901852/","name":"carbon compound","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.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 carbon compound is a chemical compound containing carbon chemically combined with at least one other element, encompassing both organic and inorganic compounds.","purpose":"Enable an agent to recognise a carbon compound, assess the evidence for its identity and condition, and determine which handling or transformation decisions require further information.","scope":{"in":["Carbon-containing composition, bonding, charge, and structural identity","Organic or inorganic classification and relevant carbon-bearing chemical families","Molecular, ionic, network, polymeric, and variable-composition forms where applicable","Sample purity, phase, stability, and properties under stated conditions","Compound-specific hazards, transformations, uses, and regulatory identifiers"],"out":["Elemental carbon and its allotropes as substances in their own right","Mixtures, formulations, and commercial products as whole entities","Manufacturing equipment and production workflows","Organisms and ecosystems that contain or transform carbon compounds","Carbon accounting systems and emissions inventories"],"boundaries":[]},"distinguishingFeatures":["Establish that carbon is chemically combined with another element; carbon content alone does not distinguish a compound from elemental carbon or a physical mixture.","Distinguish the compound's composition and structure from incidental carbon contamination in a sample.","Do not equate carbon compound with organic compound; the model must also accommodate inorganic carbon compounds.","Check connectivity, stereochemistry, charge, and solid-state structure where relevant; matching elemental formulas alone may not establish identical substances.","Treat carbon-containing mixtures and products as containing compounds rather than automatically assigning them a single compound identity."],"structure":{"bundles":[{"id":"carbon-compound-boundary","name":"Carbon compound boundary","description":"Establish whether the candidate is a carbon compound and at what level it can be identified.","layers":[{"id":"chemical-membership","name":"Chemical membership","description":"Separate chemically combined carbon from elemental or incidental carbon.","findings":[{"id":"combined-carbon-evidence","name":"Combined carbon evidence","description":"Record the basis for identifying carbon chemically combined with another element.","questions":[{"text":"What compositional and bonding evidence establishes that this is a carbon compound?","id":"combined-carbon-evidence-q01","kind":"definition"},{"text":"Could the reported carbon instead represent an elemental phase, contamination, or a separate mixture component?","id":"combined-carbon-evidence-q02","kind":"boundary"}]}]},{"id":"family-and-granularity","name":"Family and granularity","description":"Locate the candidate within the broad class without forcing a unique molecular identity.","findings":[{"id":"classification-resolution","name":"Classification resolution","description":"Record family membership and whether the name denotes an individual compound or a broader class.","questions":[{"text":"Does the name identify a particular compound, a polymer family, a variable-composition phase, or the whole carbon-compound class?","id":"classification-resolution-q01","kind":"definition"},{"text":"Which convention supports its organic or inorganic classification, and where is that classification ambiguous?","id":"classification-resolution-q02","kind":"boundary"}]}]}]},{"id":"composition-and-carbon-structure","name":"Composition and carbon structure","description":"Describe the chemical distinctions needed to identify a carbon compound.","layers":[{"id":"formula-and-stoichiometry","name":"Formula and stoichiometry","description":"Represent elemental proportions at the appropriate chemical scale.","findings":[{"id":"composition-basis","name":"Composition basis","description":"Establish whether composition is molecular, empirical, repeating, or variable.","questions":[{"text":"Which formula, repeat unit, or composition range represents the substance, including any counterions or bound solvent?","id":"composition-basis-q01","kind":"definition"},{"text":"Which measurements or authoritative records support the stated carbon-to-other-element proportions?","id":"composition-basis-q02","kind":"provenance"}]}]},{"id":"bonding-and-isomerism","name":"Bonding and isomerism","description":"Resolve structural distinctions beyond elemental composition.","findings":[{"id":"carbon-environment-resolution","name":"Carbon environment resolution","description":"Capture relevant carbon bonding environments and remaining structural ambiguity.","questions":[{"text":"Which carbon skeleton, functional groups, carbon-bearing ions, or extended bonding environments define this compound?","id":"carbon-environment-resolution-q01","kind":"definition"},{"text":"Which connectivity, stereochemical, tautomeric, or coordination distinctions must be resolved before two records can be treated as the same substance?","id":"carbon-environment-resolution-q02","kind":"boundary"}]}]}]},{"id":"sample-state-and-characterisation","name":"Sample state and characterisation","description":"Connect compound identity to the composition and condition of a real sample.","layers":[{"id":"purity-and-associated-material","name":"Purity and associated material","description":"Distinguish the target compound from accompanying substances.","findings":[{"id":"assay-and-speciation","name":"Assay and speciation","description":"Record target-compound abundance and chemically significant accompanying species.","questions":[{"text":"What assay establishes the target compound's abundance, and does it distinguish the compound from total carbon?","id":"assay-and-speciation-q01","kind":"measurement"},{"text":"Which solvents, water, impurities, or degradation products are present, and which are constituents of the specified chemical form?","id":"assay-and-speciation-q02","kind":"boundary"}]}]},{"id":"phase-and-property-conditions","name":"Phase and property conditions","description":"Make physical observations comparable and applicable.","findings":[{"id":"conditioned-property-record","name":"Conditioned property record","description":"Associate each property with chemical form, conditions, and method.","questions":[{"text":"At what temperature, pressure, and sample composition were phase, density, solubility, or transition temperatures determined?","id":"conditioned-property-record-q01","kind":"measurement"},{"text":"Does a reported thermal event represent melting, boiling, sublimation, or decomposition, and what evidence distinguishes these?","id":"conditioned-property-record-q02","kind":"measurement"}]}]}]},{"id":"carbon-transformations-and-compatibility","name":"Carbon transformations and compatibility","description":"Describe supported chemical changes and conditions affecting the compound's integrity.","layers":[{"id":"stability-and-reactivity","name":"Stability and reactivity","description":"Identify conditions under which the specified carbon compound persists or changes.","findings":[{"id":"transformation-conditions","name":"Transformation conditions","description":"Record evidence for reactions involving the carbon framework or carbon-bearing species.","questions":[{"text":"Which changes under heat, light, oxygen, water, or relevant reagents have been established for this compound?","id":"transformation-conditions-q01","kind":"provenance"},{"text":"Which tested conditions support storage or use without unacceptable decomposition, reaction, or loss of identity?","id":"transformation-conditions-q02","kind":"action"}]}]},{"id":"carbon-product-tracing","name":"Carbon product tracing","description":"Track the chemical destination of carbon during a specified transformation.","findings":[{"id":"carbon-fate-evidence","name":"Carbon fate evidence","description":"Distinguish measured products from assumed outcomes of oxidation, decomposition, or other reactions.","questions":[{"text":"Which carbon-bearing products were identified under the stated reaction conditions, and by what methods?","id":"carbon-fate-evidence-q01","kind":"measurement"},{"text":"What carbon balance, yield, or unresolved product fraction limits conclusions about the transformation?","id":"carbon-fate-evidence-q02","kind":"measurement"}]}]}]},{"id":"identity-linked-handling","name":"Identity-linked handling","description":"Connect chemical identity and sample form to hazard evidence and permitted actions.","layers":[{"id":"identifier-and-evidence-matching","name":"Identifier and evidence matching","description":"Ensure external records describe the intended chemical entity.","findings":[{"id":"chemical-record-alignment","name":"Chemical record alignment","description":"Check identifier scope before importing properties or classifications.","questions":[{"text":"Which verified identifiers correspond to this exact compound or defined substance class?","id":"chemical-record-alignment-q01","kind":"provenance"},{"text":"Do the linked records cover the same isomer, salt, hydrate, polymer specification, or composition range?","id":"chemical-record-alignment-q02","kind":"boundary"}]}]},{"id":"hazards-and-action-conditions","name":"Hazards and action conditions","description":"Translate applicable evidence into handling constraints.","findings":[{"id":"supported-handling-decisions","name":"Supported handling decisions","description":"Record compound-specific hazards and the conditions governing safe action.","questions":[{"text":"Which hazard classifications and exposure limits apply to this substance and physical form in the relevant jurisdiction, according to which dated sources?","id":"supported-handling-decisions-q01","kind":"provenance"},{"text":"What controls and compatibility checks are required before storing, transferring, heating, reacting, or disposing of this material?","id":"supported-handling-decisions-q02","kind":"action"}]}]}]},{"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.","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.","questions":[{"text":"Which of these check these first hold for the sense of carbon compound this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of carbon compound this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of carbon compound this model covers, and on what evidence?","id":"evidence-identifiers-q01","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.","questions":[{"text":"Which of these real-world use hold for the sense of carbon compound this model covers, and on what evidence?","id":"evidence-real-world-use-q01","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.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of carbon compound this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","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.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of carbon compound this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Classify substances as carbon compounds and report their properties from chemical references.","Distinguish organic and inorganic carbon compounds in data."],"mustNot":["Treat all carbon compounds as safe, or all as hazardous, without checking the specific substance.","Assist in making or using any carbon compound to harm people.","Label a product natural or chemical-free when it is made of carbon compounds like everything else."],"requiresHuman":["Handling or releasing a carbon compound whose hazards are unknown."]},"ethics":{"considerations":["The category spans foods, medicines, fuels and poisons, so generalizations mislead."],"affectedParties":["Consumers","Workers handling chemicals","Students"]},"owners":{"steward":"Nobody owns the category; holders of each substance answer for it.","roles":[],"masterSystems":["Chemical substance registries"]},"relations":[{"target":"Q11173","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.carbon-compound","Wikidata: Q2901852 (https://www.wikidata.org/wiki/Q2901852)"]},"properties":{"applicability":"required","items":["Carbon-bearing composition: Molecular or empirical formula; repeat unit or composition range where appropriate","Structural identity: Connectivity, stereochemistry, charge, coordination, or extended structure; unresolved where unknown","Carbon bonding environment: Carbon skeleton, functional groups, carbon-bearing ions, metal-carbon bonding, or network environments as applicable","Chemical family: Organic or inorganic under a stated convention; narrower family assignments with evidence","Sample composition and purity: Mass fraction, mole fraction, or assay percentage with method and uncertainty","Physical form and conditions: Phase, polymorph or amorphous form where relevant; temperature in K and pressure in Pa","Measured physical properties: Melting, boiling, or decomposition temperature in K; density in kg/m³; solubility with solvent and concentration basis","Chemical identifier mapping: Verified CAS, PubChem, EC, or other records, with the chemical form covered by each","Hazard and exposure evidence: Classification, exposure route, applicable limit and units, jurisdiction, source, and date"]},"recognition":{"applicability":"not-applicable","items":[]},"capabilities":{"applicability":"required","items":["Determine whether a candidate belongs to the carbon-compound class and identify unresolved boundary cases.","Resolve a named substance to a documented composition, structure, and chemical form.","Compare samples using assay results and physical properties measured under compatible conditions.","Identify evidence needed before selecting storage, analytical, separation, or transformation conditions.","Trace carbon-bearing reactants and products through a documented chemical transformation.","Link compound-specific handling and disposal decisions to applicable hazard evidence."]},"hazards":{"applicability":"required","items":["Hazards vary from harmless to highly toxic or flammable by specific compound."]},"interfaces":{"applicability":"required","items":["Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013, issued by the International Union of Pure and Applied Chemistry, provides naming recommendations for organic carbon compounds.","Nomenclature of Inorganic Chemistry: IUPAC Recommendations 2005, issued by the International Union of Pure and Applied Chemistry, provides naming recommendations for inorganic carbon compounds."]},"context":{"applicability":"required","items":["Carbon compounds occur in living organisms, minerals, fuels, foods and manufactured materials.","They are studied and used across chemistry, biology, agriculture and industrial production.","The identity of the particular compound determines its useful functions and the evidence needed for handling or transformation."]}},"sources":[{"title":"Wikidata item Q2901852: carbon compound","url":"https://www.wikidata.org/wiki/Q2901852","note":"identity and sense of the item"},{"title":"Wikipedia: Carbon compounds","url":"https://en.wikipedia.org/wiki/Carbon_compounds","note":"general description of the item"}],"openQuestions":["Does the registry intend carbon compound to include all organic and inorganic carbon compounds, including extended solids and variable-composition phases?","Which existing Vercy models already own chemical-substance identity, organic compounds, and inorganic compounds, and what should this entry inherit or link to?","How should the catalogue represent polymer families and nonstoichiometric carbon-containing phases without implying a unique molecular formula?","Which authoritative classification convention should govern disputed organic-inorganic boundary cases?","What minimum analytical evidence should distinguish an identified carbon compound from a material reported only to contain carbon?"],"resources":{"spec":"/models/things/publications/thing-q2901852/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2901852/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T08:22:37Z","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":"not-applicable","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 2026-10-07T10:10:29+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.recognition":"Carbon compound membership has no reliable visual signature and requires evidence of chemical composition."},"score":1.0}}