{ "model": { "rank": 3729, "code": "thing-q52858", "model_id": "vr.tr.ethane", "name": "ethane", "purpose": "Enable an agent to identify ethane, assess the condition and suitability of an ethane sample or stream, and determine which handling or processing actions its composition, physical state and documented controls support.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q52858/", "tier": 2, "score": 82, "payload": { "layer": "wikidata", "aliases": [ "Ethane-13C1", "Ethane-13C2" ], "aliasCount": 2, "merged": 2, "knownIn": 82, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.ethane", "source": { "dataset": "wikidata", "item": "Q52858", "url": "https://www.wikidata.org/wiki/Q52858", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T15:00:51Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 28, "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: 01a07c61-a273-7b81-8a2c-c42d781d45ee\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: ethane\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 801 things:\n# Batch 004: 1001 registere", "usd": 0, "recall": true }, "codex": { "seconds": 83.6, "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: 01a07c61-a271-71b2-9635-acda23249293\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: ethane\nRegistry id: vr.tr.ethane\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext fo" } } }, "metaModel": { "id": "THING-Q52858", "registryId": "vr.tr.ethane", "name": "ethane", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q52858/", "model": { "registry_id": "vr.tr.ethane", "name": "ethane", "purpose": "Enable an agent to identify ethane, assess the condition and suitability of an ethane sample or stream, and determine which handling or processing actions its composition, physical state and documented controls support.", "definition": "Ethane is the saturated acyclic hydrocarbon C₂H₆, consisting of two carbon atoms joined by a single bond and six hydrogen atoms, and is a colourless, flammable gas at ordinary ambient temperature and pressure.", "scope_statement": "This model owns ethane (vr.tr.ethane), the saturated hydrocarbon C2H6, including its chemical identity, sample composition, condition-dependent properties, industrial suitability and substance-specific hazards; it distinguishes the substance from mixtures, products and equipment that contain it.", "in_scope": [ "Molecular identity and traceable chemical identifiers for ethane", "Ethane purity, grade, impurities and analytical evidence", "Physical phase and measured properties at stated temperature and pressure", "Suitability as a petrochemical feedstock, fuel component or research material", "Ethane-specific flammability, oxygen-displacement and pressure or cryogenic hazards", "Applicable substance classifications and condition-dependent transport identities" ], "out_of_scope": [ "Natural gas and other multicomponent mixtures as complete materials", "Ethylene, methane, propane and other distinct chemical substances", "Steam crackers, refrigeration systems, storage vessels and pipelines as equipment", "Complete production, separation or combustion process models", "Commercial product contracts and supplier organisations", "Facility-wide emergency response and environmental permitting" ], "distinguishing_features": [ "An ethane molecule contains two carbon atoms and six hydrogen atoms joined as CH3-CH3, distinguishing it from methane and propane.", "Its carbon-carbon bond is single, distinguishing saturated ethane, C2H6, from unsaturated ethylene, C2H4.", "Ethane is gaseous at ordinary room temperature and atmospheric pressure; a claimed liquid sample requires supporting temperature and pressure evidence.", "A stream containing ethane is not necessarily an ethane-grade material: measured composition must distinguish a qualified ethane supply from natural gas or another mixture." ], "characteristics": [ { "name": "Chemical identity", "kind": "category", "unit_or_values": "Ethane; C2H6; CH3-CH3; verified CAS, PubChem and EC identifiers", "why_it_matters": "Prevents confusion with ethylene and connects records to the correct substance." }, { "name": "Ethane content", "kind": "measurement", "unit_or_values": "mol%, mass% or volume% with basis, analytical method and uncertainty", "why_it_matters": "Determines whether a sample meets its stated grade and supports valid property calculations." }, { "name": "Impurity profile", "kind": "measurement", "unit_or_values": "Component-specific mol%, ppm by mole or mg/kg, including detection limits", "why_it_matters": "Water, sulfur species, carbon dioxide, oxygen and other hydrocarbons can affect processing, safety and product suitability." }, { "name": "Grade qualification", "kind": "relation", "unit_or_values": "Sample or lot linked to a named specification, revision and certificate of analysis", "why_it_matters": "A grade claim is meaningful only against explicit acceptance criteria and evidence." }, { "name": "Temperature", "kind": "measurement", "unit_or_values": "K or °C, with location and measurement time", "why_it_matters": "Controls phase, density and whether cryogenic handling conditions apply." }, { "name": "Pressure", "kind": "measurement", "unit_or_values": "Pa, kPa or bar, explicitly absolute or gauge", "why_it_matters": "Supports phase assessment and interpretation of storage and transfer conditions." }, { "name": "Physical state", "kind": "state", "unit_or_values": "Gas, liquid, solid, two-phase or supercritical, supported by composition and conditions", "why_it_matters": "Determines which property models and handling controls are relevant." }, { "name": "Phase-transition reference properties", "kind": "measurement", "unit_or_values": "Melting and boiling temperatures in K or °C at specified pressure; critical temperature and pressure with sources", "why_it_matters": "Allows condition-dependent phase claims to be checked rather than inferred from a substance label." }, { "name": "Density", "kind": "measurement", "unit_or_values": "kg/m³ at stated temperature, pressure, phase and composition", "why_it_matters": "Supports quantity conversion, inventory assessment and transfer calculations." }, { "name": "Hazard and transport classification", "kind": "category", "unit_or_values": "Verified jurisdiction-specific GHS classification and transport designation for the supplied physical form", "why_it_matters": "Compressed and refrigerated supplies can require different documentation and controls." }, { "name": "Exposure-control criteria", "kind": "relation", "unit_or_values": "Applicable exposure limits, oxygen criteria and flammable-gas alarm criteria, each with units, authority and averaging basis", "why_it_matters": "Separates substance exposure requirements from oxygen deficiency and ignition prevention." } ], "affordances": [ "Verify that an analytical result or supplier record identifies ethane rather than ethylene or an unspecified hydrocarbon mixture.", "Qualify a sample against a named ethane purity or feedstock specification.", "Assess the likely phase and select appropriate property data using recorded composition, temperature and pressure.", "Screen a proposed storage or transfer operation against documented pressure, temperature and material-compatibility requirements.", "Assess suitability for ethylene production, fuel use or research against use-specific impurity limits.", "Identify missing measurements or classifications that prevent a handling or processing decision." ] }, "sources": [], "structure": { "bundles": [ { "id": "ethane-identity", "name": "Ethane identity", "description": "Establishes the molecular substance and the boundary between ethane and an ethane-containing material.", "rationale": "Similar names and mixed hydrocarbon streams can cause an agent to apply the wrong substance model.", "layers": [ { "id": "molecular-identification", "name": "Molecular identification", "description": "Connects the ethane name to a specific molecular structure and authoritative identifiers.", "findings": [ { "id": "saturated-two-carbon-identity", "name": "Saturated two-carbon identity", "description": "Identity evidence must resolve ethane as CH3-CH3 rather than ethylene or another hydrocarbon.", "questions": [ { "text": "Which verified identifiers and structural representation establish this record as ethane, C2H6?", "kind": "definition", "id": "saturated-two-carbon-identity-q01" }, { "text": "Which authoritative record or analytical evidence supports that identification?", "kind": "provenance", "id": "saturated-two-carbon-identity-q02" } ] } ] }, { "id": "substance-mixture-boundary", "name": "Substance and mixture boundary", "description": "Separates the ethane substance from a sample, grade or mixture containing it.", "findings": [ { "id": "ethane-versus-containing-stream", "name": "Ethane versus containing stream", "description": "A composition result and declared specification determine how a physical material relates to the ethane substance model.", "questions": [ { "text": "Does this record describe molecular ethane, a qualified ethane lot or ethane as a component of a broader mixture?", "kind": "boundary", "id": "ethane-versus-containing-stream-q01" }, { "text": "Which specification, if any, permits this composition to be described as an ethane grade?", "kind": "definition", "id": "ethane-versus-containing-stream-q02" } ] } ] } ] }, { "id": "composition-and-grade", "name": "Composition and grade", "description": "Records measured ethane content, consequential impurities and the evidence behind grade claims.", "rationale": "The same substance identity can cover samples with substantially different processing suitability.", "layers": [ { "id": "analytical-composition", "name": "Analytical composition", "description": "Captures composition on an explicit measurement basis.", "findings": [ { "id": "purity-and-impurity-evidence", "name": "Purity and impurity evidence", "description": "Ethane purity must be accompanied by quantified relevant impurities, analytical limits and representative sampling information.", "questions": [ { "text": "What are the ethane fraction and measured concentrations of other hydrocarbons, water, sulfur species, carbon dioxide and oxygen?", "kind": "measurement", "id": "purity-and-impurity-evidence-q01" }, { "text": "Which sampling procedure, analytical method, reporting basis and detection limits support those results?", "kind": "provenance", "id": "purity-and-impurity-evidence-q02" } ] } ] }, { "id": "grade-acceptance", "name": "Grade acceptance", "description": "Connects a particular sample or lot to documented acceptance criteria.", "findings": [ { "id": "specification-conformance", "name": "Specification conformance", "description": "Grade qualification requires checking the measured sample against a named specification rather than relying on a commercial label.", "questions": [ { "text": "Which specification revision defines this ethane grade and its impurity limits?", "kind": "provenance", "id": "specification-conformance-q01" }, { "text": "Do the available results establish conformance, or is additional sampling or analysis required?", "kind": "action", "id": "specification-conformance-q02" } ] } ] } ] }, { "id": "phase-and-properties", "name": "Phase and properties", "description": "Relates ethane's physical state and quantitative properties to its actual conditions.", "rationale": "Ambient gas, refrigerated liquid and supercritical ethane cannot be evaluated using interchangeable property assumptions.", "layers": [ { "id": "condition-dependent-phase", "name": "Condition-dependent phase", "description": "Establishes physical state from temperature, pressure and composition.", "findings": [ { "id": "supported-phase-assignment", "name": "Supported phase assignment", "description": "A phase designation must be supported by measured conditions and suitable phase-equilibrium evidence.", "questions": [ { "text": "What temperature, absolute pressure and composition describe the ethane at the relevant location and time?", "kind": "measurement", "id": "supported-phase-assignment-q01" }, { "text": "Which observations or validated phase model establish whether it is gaseous, liquid, solid, two-phase or supercritical?", "kind": "provenance", "id": "supported-phase-assignment-q02" } ] } ] }, { "id": "property-applicability", "name": "Property applicability", "description": "Selects physical-property values valid for the sample and operating range.", "findings": [ { "id": "traceable-thermophysical-values", "name": "Traceable thermophysical values", "description": "Transition temperatures, critical properties and density require sources, units and stated applicability.", "questions": [ { "text": "Which sourced melting, boiling and critical-point values apply, and what pressure and purity assumptions accompany them?", "kind": "measurement", "id": "traceable-thermophysical-values-q01" }, { "text": "Is the proposed density or equation of state valid for this temperature, pressure and impurity profile?", "kind": "boundary", "id": "traceable-thermophysical-values-q02" } ] } ] } ] }, { "id": "ethane-use-suitability", "name": "Ethane use suitability", "description": "Connects ethane properties and grade to a specified industrial or research purpose.", "rationale": "Chemical identity alone does not establish fitness for cracking, combustion or a controlled experiment.", "layers": [ { "id": "petrochemical-feedstock", "name": "Petrochemical feedstock", "description": "Assesses ethane as a feedstock for ethylene production.", "findings": [ { "id": "cracker-feed-qualification", "name": "Cracker feed qualification", "description": "Feed suitability depends on the receiving process's composition and delivery requirements.", "questions": [ { "text": "What ethane content, impurity limits and delivery conditions does the receiving cracking process require?", "kind": "boundary", "id": "cracker-feed-qualification-q01" }, { "text": "Does this lot meet those requirements, or must it be conditioned, blended or rejected?", "kind": "action", "id": "cracker-feed-qualification-q02" } ] } ] }, { "id": "fuel-and-research-use", "name": "Fuel and research use", "description": "Records requirements specific to combustion or experimental applications.", "findings": [ { "id": "application-specific-qualification", "name": "Application-specific qualification", "description": "Fuel performance and research validity require different supporting measurements and purity evidence.", "questions": [ { "text": "For the intended use, which heating-value basis, composition tolerances or trace-impurity limits must be recorded?", "kind": "measurement", "id": "application-specific-qualification-q01" }, { "text": "Which use requirements remain unmet or unverified for this sample?", "kind": "action", "id": "application-specific-qualification-q02" } ] } ] } ] }, { "id": "hazards-and-handling", "name": "Hazards and handling", "description": "Connects ethane's flammability and supplied physical form to verified classifications and handling constraints.", "rationale": "Ethane decisions must account for ignition, oxygen displacement, stored pressure and refrigerated-liquid conditions.", "layers": [ { "id": "release-and-exposure", "name": "Release and exposure", "description": "Separates flammable-atmosphere assessment from oxygen-deficiency and exposure criteria.", "findings": [ { "id": "atmosphere-assessment", "name": "Atmosphere assessment", "description": "Atmospheric acceptability requires appropriate ethane or flammable-gas measurements and oxygen measurements against applicable criteria.", "questions": [ { "text": "What ethane or flammable-gas concentration and oxygen concentration have been measured, using instruments suitable for ethane?", "kind": "measurement", "id": "atmosphere-assessment-q01" }, { "text": "Which sourced flammability limits, exposure limits where applicable, and site alarm criteria govern the decision?", "kind": "provenance", "id": "atmosphere-assessment-q02" } ] } ] }, { "id": "supply-form-and-classification", "name": "Supply form and classification", "description": "Links compressed or refrigerated ethane to applicable documentation and containment requirements.", "findings": [ { "id": "condition-specific-handling-constraints", "name": "Condition-specific handling constraints", "description": "Handling and transport decisions require classifications and equipment limits that match ethane's supplied state.", "questions": [ { "text": "Which current safety data sheet, GHS classification and transport designation apply to this physical form and jurisdiction?", "kind": "provenance", "id": "condition-specific-handling-constraints-q01" }, { "text": "Do the documented pressure, temperature and material-compatibility limits support the proposed storage or transfer?", "kind": "action", "id": "condition-specific-handling-constraints-q02" } ] } ] } ] }, { "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 recalled knowledge; no sources were consulted.", "Verify jurisdiction-specific hazard categories, transport entries and occupational exposure requirements before regulatory use.", "Physical constants describe pure ethane; commercial grades require explicit purity and impurity specifications." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of ethane this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Commercial ethane for petrochemical feedstock", "High-purity ethane for laboratory and analytical use", "Isotopically labelled ethane" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of ethane 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": "74-84-0", "note": "Identifies ethane as a chemical substance." }, { "scheme": "PubChem CID", "value_or_pattern": "6324", "note": "Compound identifier for ethane." }, { "scheme": "EC number", "value_or_pattern": "200-814-8", "note": "European chemical inventory identifier." }, { "scheme": "Molecular formula", "value_or_pattern": "C2H6", "note": "The second member of the alkane homologous series." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of ethane 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): framework relevant to flammability and gases under pressure.", "United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations: transport framework distinguishing compressed and refrigerated liquid ethane." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of ethane 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": [ "Steam-cracking feedstock for producing ethylene.", "Component of natural gas used as fuel.", "Specialised low-temperature refrigerant, designated R-170.", "Liquid cryogen for rapid freezing of specimens in cryogenic electron microscopy.", "Component of analytical calibration gas mixtures." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of ethane 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": "30.07", "unit": "g/mol" }, { "quantity": "Normal boiling point at 101.325 kPa", "typical_range": "Approximately -88.6", "unit": "°C" }, { "quantity": "Melting point near atmospheric pressure", "typical_range": "Approximately -182.8", "unit": "°C" }, { "quantity": "Critical temperature", "typical_range": "Approximately 32.2", "unit": "°C" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of ethane 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": [ "Forms flammable mixtures with air; ignition can cause fire or explosion.", "Can displace oxygen and create an asphyxiation hazard in enclosed spaces.", "Pressurised containers can rupture when heated.", "Refrigerated liquid can cause severe cold burns and material embrittlement.", "Incomplete combustion can generate carbon monoxide." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of ethane 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": [ "GHS implementation, workplace requirements and transport rules depend on jurisdiction.", "Commercial purity and impurity specifications vary by supplier and intended application." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of ethane 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": "Methane", "difference": "Methane is CH4 and has one carbon atom; ethane is C2H6 and has two." }, { "name": "Ethylene", "difference": "Ethylene is C2H4 with a carbon-carbon double bond; ethane has a single bond." }, { "name": "Propane", "difference": "Propane is C3H8 and has three carbon atoms." }, { "name": "Natural gas", "difference": "Natural gas is a variable mixture that may contain ethane; ethane is a defined chemical substance." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of ethane this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative identity records should anchor the CAS, PubChem and EC identifiers for this registry entry?", "Which reference datasets and uncertainty ranges should supply ethane's phase-transition, critical and thermophysical properties?", "Which supplier or receiving-process specifications define the ethane grades this model must support?", "Which jurisdiction-specific hazard classifications, transport designations and exposure criteria apply to the intended deployment?", "What analytical and sampling evidence is sufficient to qualify a lot and detect consequential changes during storage or transfer?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 19, "questions": 29 } }, "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 ethane, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to identify ethane, assess the condition and suitability of an ethane sample or stream, and determine which handling or processing actions its composition, physical state and documented controls support.", "characteristics": { "substance": "material", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured", "consumed or used up" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: Ethane-13C1, Ethane-13C2.", "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 82 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 ethane, 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": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "Ethane-13C1", "Ethane-13C2" ] } ], "standing": "Described in 82 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one ethane from another, and a ethane 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 ethane, 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 ethane, 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 ethane 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 ethane, 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 ethane, 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 ethane 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 ethane 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 ethane, 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 ethane, 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 ethane 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 ethane from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a ethane, 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 ethane, 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 ethane 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 ethane 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 ethane, 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 ethane, 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 ethane 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 ethane is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a ethane, 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 ethane, 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 ethane 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 ethane is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a ethane, 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 ethane, 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 ethane 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 ethane 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 ethane is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a ethane, 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 ethane, 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 ethane 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 ethane 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 ethane, 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 ethane, 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 ethane 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 ethane 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 ethane between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a ethane, 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 ethane, 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 ethane 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 ethane, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a ethane 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 ethane, 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 ethane, 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 ethane 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 ethane 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 ethane is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a ethane performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a ethane, 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 ethane, 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 ethane 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 ethane.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a ethane at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a ethane, 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 ethane, 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 ethane 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 ethane there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a ethane, 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 ethane, 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 ethane 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 ethane 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 ethane 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 ethane 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 ethane 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 ethane, 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 ethane 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 ethane 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 ethane 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 ethane, 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 ethane 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 ethane and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a ethane, 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 ethane, 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 ethane 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 ethane is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a ethane, 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 ethane, 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 ethane 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 } } } }