{ "model": { "rank": 3998, "code": "thing-q151313", "model_id": "vr.tr.ethylene", "name": "ethylene", "purpose": "Enable an agent to identify ethylene, assess the condition and fitness of a particular quantity, and determine appropriate handling or use from its composition, physical state and intended application.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q151313/", "tier": 2, "score": 79, "payload": { "layer": "wikidata", "aliases": [ "Ethylene-13C2", "Ethylene-13C1" ], "aliasCount": 2, "merged": 2, "knownIn": 79, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.ethylene", "source": { "dataset": "wikidata", "item": "Q151313", "url": "https://www.wikidata.org/wiki/Q151313", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T19:15:28Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 26.7, "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: 01a08797-aa7a-7971-bb87-9cede758f7d6\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: ethylene\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 695 things:\n# Batch 004: 1001 registe", "usd": 0, "recall": true }, "codex": { "seconds": 70.2, "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: 01a08797-aa7a-7820-81af-7ee7e6309a18\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: ethylene\nRegistry id: vr.tr.ethylene\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContex" } } }, "metaModel": { "id": "THING-Q151313", "registryId": "vr.tr.ethylene", "name": "ethylene", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q151313/", "model": { "registry_id": "vr.tr.ethylene", "name": "ethylene", "purpose": "Enable an agent to identify ethylene, assess the condition and fitness of a particular quantity, and determine appropriate handling or use from its composition, physical state and intended application.", "definition": "Ethylene, systematically named ethene, is the hydrocarbon C₂H₄, the simplest alkene, occurring as a colourless flammable gas under ordinary ambient conditions and functioning both as an industrial chemical feedstock and a plant hormone.", "scope_statement": "This model owns ethylene as the chemical substance ethene, registry entry vr.tr.ethylene in PHY / PHY.MAT, including sample composition, physical state, reactive behavior, plant-signaling activity and constraints on use.", "in_scope": [ "Molecular identity and identifiers distinguishing ethylene from similarly named substances", "Purity, grade and impurities in an identified quantity of ethylene", "Phase, temperature, pressure and condition-dependent physical properties", "Chemical reactivity and suitability as a feedstock", "Ethylene concentration and activity in plant-treatment environments", "Hazards, exposure conditions and jurisdiction-specific handling constraints" ], "out_of_scope": [ "Design and operation of ethylene manufacturing plants", "Polyethylene and other products synthesized from ethylene", "Ethylene oxide, ethylene glycol, ethane and acetylene as separate substances", "Design, certification and maintenance of storage vessels or distribution equipment", "Whole-plant physiology and complete crop-management protocols", "Commercial formulations or gas mixtures as independently specified products" ], "distinguishing_features": [ "Ethylene is ethene, C2H4, with a carbon-carbon double bond; ethane has a single bond and formula C2H6.", "Acetylene has formula C2H2 and a carbon-carbon triple bond, so its identity and handling requirements cannot substitute for ethylene's.", "Ethylene contains no oxygen; ethylene oxide and ethylene glycol are chemically distinct despite their shared name fragment.", "Polyethylene is a polymer made from ethylene units, not a grade or physical phase of ethylene.", "Ethylene used in plant treatment is the same molecular substance used as a chemical feedstock; concentration, purity and application conditions determine fitness for each use." ], "characteristics": [ { "name": "Chemical identity", "kind": "category", "unit_or_values": "Ethene / ethylene; molecular formula C2H4; verified structural representation and substance identifiers", "why_it_matters": "Prevents similarly named chemicals and derived materials from being treated as interchangeable." }, { "name": "Ethylene content", "kind": "measurement", "unit_or_values": "mol%, mass%, volume fraction or ppm, with analytical basis and uncertainty", "why_it_matters": "Distinguishes substance purity from concentration in a carrier gas or treatment atmosphere." }, { "name": "Impurity profile", "kind": "measurement", "unit_or_values": "Named contaminants and concentrations, with detection limits; assess water, oxygen, sulfur compounds and other hydrocarbons as relevant", "why_it_matters": "Impurities can affect catalyst performance, product quality and suitability for plant treatment." }, { "name": "Grade and specification", "kind": "category", "unit_or_values": "Supplier-declared grade, specification revision and acceptance criteria", "why_it_matters": "A grade label requires supporting limits before an agent can judge fitness for a particular application." }, { "name": "Physical state", "kind": "state", "unit_or_values": "Gas, liquid, solid, supercritical fluid or multiphase; temperature in K or °C and absolute pressure in kPa or bar", "why_it_matters": "Determines how a quantity can be measured, transferred and contained." }, { "name": "Condition-dependent physical properties", "kind": "measurement", "unit_or_values": "Density in kg/m³; phase-transition temperatures in K or °C at stated pressure; critical temperature and pressure", "why_it_matters": "Supports inventory conversion and assessment of phase changes without treating reference values as universal." }, { "name": "Reaction and material compatibility", "kind": "relation", "unit_or_values": "Ethylene linked to reactants, catalysts and contact materials under specified conditions", "why_it_matters": "Intended conversion and unintended reaction depend on the surrounding chemical system." }, { "name": "Plant-treatment exposure", "kind": "measurement", "unit_or_values": "Ethylene concentration in ppm by volume or µmol/mol, duration in hours, temperature, humidity and atmospheric composition", "why_it_matters": "Plant response cannot be inferred from the presence of ethylene alone." }, { "name": "Hazard and regulatory status", "kind": "category", "unit_or_values": "Applicable classification, jurisdiction, physical form, source document and revision date", "why_it_matters": "Handling and permitted-use decisions require current rules matched to the actual supply form and application." }, { "name": "Batch evidence", "kind": "relation", "unit_or_values": "Quantity or sample linked to supplier, lot, certificate of analysis, safety data sheet and sampling record", "why_it_matters": "Makes composition and suitability judgments traceable to evidence for the actual material." } ], "affordances": [ "Resolve an ethylene label against chemical identity evidence and reject similarly named substances.", "Compare an analyzed quantity against a specified feedstock or plant-treatment purity requirement.", "Determine the physical state and appropriate inventory calculation from measured temperature, pressure and composition.", "Assess a proposed reaction or transfer against documented compatibility and operating conditions.", "Evaluate a proposed plant exposure against a validated protocol for the species and developmental stage.", "Identify missing evidence that prevents a handling, release or use decision." ] }, "sources": [], "structure": { "bundles": [ { "id": "ethylene-identity-and-grade", "name": "Ethylene identity and grade", "description": "Establishes molecular identity and the composition of the quantity under consideration.", "rationale": "Name similarity and broad grade labels are insufficient to establish that a sample is ethylene fit for its intended use.", "layers": [ { "id": "molecular-identity", "name": "Molecular identity", "description": "Separates ethene from related hydrocarbons and oxygen-containing derivatives.", "findings": [ { "id": "ethene-identity-evidence", "name": "Ethene identity evidence", "description": "Record evidence connecting the supplied name to C2H4 with a carbon-carbon double bond and verified substance identifiers.", "questions": [ { "text": "Does the record identify ethene itself, rather than ethane, acetylene, ethylene oxide or a product made from ethylene?", "kind": "boundary", "id": "ethene-identity-evidence-q01" }, { "text": "Which authoritative records establish its CAS number, PubChem CID and EC number?", "kind": "provenance", "id": "ethene-identity-evidence-q02" } ] } ] }, { "id": "purity-and-impurities", "name": "Purity and impurities", "description": "Connects measured composition to application-specific acceptance criteria.", "findings": [ { "id": "grade-supported-by-analysis", "name": "Grade supported by analysis", "description": "Record ethylene content, relevant impurities and analytical limits against the declared grade specification.", "questions": [ { "text": "What ethylene fraction and impurity concentrations were measured, on what basis and with which detection limits?", "kind": "measurement", "id": "grade-supported-by-analysis-q01" }, { "text": "Which specification and batch certificate support acceptance for the intended reaction or plant-treatment application?", "kind": "provenance", "id": "grade-supported-by-analysis-q02" } ] } ] } ] }, { "id": "ethylene-phase-and-inventory", "name": "Ethylene phase and inventory", "description": "Describes the physical state of an ethylene quantity and the evidence supporting its measured amount.", "rationale": "Ethylene's state and density depend on operating conditions, so a volume or supply-form label alone cannot establish inventory or transfer behavior.", "layers": [ { "id": "phase-at-operating-conditions", "name": "Phase at operating conditions", "description": "Evaluates phase using temperature, absolute pressure and composition.", "findings": [ { "id": "condition-qualified-phase", "name": "Condition-qualified phase", "description": "Record observed or calculated phase and its distance from relevant phase boundaries.", "questions": [ { "text": "At the measured temperature, absolute pressure and composition, is this quantity gaseous, liquid, supercritical or multiphase?", "kind": "measurement", "id": "condition-qualified-phase-q01" }, { "text": "Which source or validated property model supplies the applicable boiling, melting and critical-point data?", "kind": "provenance", "id": "condition-qualified-phase-q02" } ] } ] }, { "id": "quantity-and-transfer-state", "name": "Quantity and transfer state", "description": "Makes mass, mole and volume records comparable under explicit reference conditions.", "findings": [ { "id": "traceable-ethylene-inventory", "name": "Traceable ethylene inventory", "description": "Associate each quantity with its measurement basis and any density or compressibility assumptions used.", "questions": [ { "text": "Is the reported volume actual or standardized, and what temperature, pressure and compressibility basis defines it?", "kind": "measurement", "id": "traceable-ethylene-inventory-q01" }, { "text": "Would the proposed pressure or temperature change cross a phase boundary and require a different transfer assessment?", "kind": "action", "id": "traceable-ethylene-inventory-q02" } ] } ] } ] }, { "id": "ethylene-reactivity-and-feedstock-use", "name": "Ethylene reactivity and feedstock use", "description": "Relates ethylene's double-bond chemistry to a proposed conversion and its input requirements.", "rationale": "The molecule can serve several reaction pathways, but suitability depends on the chosen process and evidence about composition and conditions.", "layers": [ { "id": "intended-chemical-conversion", "name": "Intended chemical conversion", "description": "Identifies the role of ethylene in a specified reaction without absorbing the resulting product model.", "findings": [ { "id": "reaction-role-and-boundary", "name": "Reaction role and boundary", "description": "Record whether ethylene is being polymerized, oxidized, hydrogenated or otherwise converted, with the intended output separately identified.", "questions": [ { "text": "What transformation consumes ethylene, and what evidence defines the required reactants, catalyst and operating conditions?", "kind": "definition", "id": "reaction-role-and-boundary-q01" }, { "text": "At what point does the record describe a reaction mixture or derived product rather than the ethylene input?", "kind": "boundary", "id": "reaction-role-and-boundary-q02" } ] } ] }, { "id": "feedstock-acceptance", "name": "Feedstock acceptance", "description": "Tests a specific ethylene quantity against process-sensitive composition and compatibility requirements.", "findings": [ { "id": "process-specific-acceptance-evidence", "name": "Process-specific acceptance evidence", "description": "Keep catalyst sensitivity, impurity limits and contact compatibility tied to the actual proposed process.", "questions": [ { "text": "Which contaminants have acceptance limits for this catalyst or reaction, and does this batch meet them?", "kind": "measurement", "id": "process-specific-acceptance-evidence-q01" }, { "text": "Which documented compatibility constraints govern ethylene contact with the proposed reactants and materials?", "kind": "action", "id": "process-specific-acceptance-evidence-q02" } ] } ] } ] }, { "id": "ethylene-in-plant-environments", "name": "Ethylene in plant environments", "description": "Captures ethylene as a plant signal and as an intentional or unwanted component of a crop atmosphere.", "rationale": "Ethylene can produce biologically consequential responses, so industrial purity and bulk inventory alone do not determine whether its presence is desirable.", "layers": [ { "id": "plant-response-context", "name": "Plant response context", "description": "Connects a possible response to species, cultivar, tissue and developmental state.", "findings": [ { "id": "response-specific-target", "name": "Response-specific target", "description": "Record the intended or observed response, such as ripening, senescence or abscission, without assuming a uniform effect across plants.", "questions": [ { "text": "Which species, cultivar, tissue and developmental stage is exposed, and what response is intended or observed?", "kind": "definition", "id": "response-specific-target-q01" }, { "text": "What experimental or operational evidence supports that response for this biological context?", "kind": "provenance", "id": "response-specific-target-q02" } ] } ] }, { "id": "atmospheric-exposure", "name": "Atmospheric exposure", "description": "Describes ethylene concentration over time and conditions affecting treatment interpretation.", "findings": [ { "id": "measured-plant-exposure", "name": "Measured plant exposure", "description": "Separate measured atmospheric concentration from the amount introduced, and account for biological production and ventilation.", "questions": [ { "text": "What concentration-time history was measured near the plant material, alongside temperature, humidity, oxygen and carbon dioxide?", "kind": "measurement", "id": "measured-plant-exposure-q01" }, { "text": "Does the validated application protocol call for adding ethylene, preventing accumulation or ending exposure under the recorded conditions?", "kind": "action", "id": "measured-plant-exposure-q02" } ] } ] } ] }, { "id": "ethylene-hazards-and-use-constraints", "name": "Ethylene hazards and use constraints", "description": "Connects ethylene's flammability, atmospheric displacement and supply-form hazards to evidence-based decisions.", "rationale": "A use decision must account for both the substance and its actual concentration, containment state and jurisdiction.", "layers": [ { "id": "release-and-exposure-conditions", "name": "Release and exposure conditions", "description": "Assesses flammable-atmosphere potential, oxygen displacement and pressure or cold exposure where applicable.", "findings": [ { "id": "scenario-specific-hazard-evidence", "name": "Scenario-specific hazard evidence", "description": "Associate hazard assessment with the release scenario, physical form and independently measured atmospheric conditions.", "questions": [ { "text": "What ethylene and oxygen measurements characterize the atmosphere, and which sourced flammability data apply at its temperature and pressure?", "kind": "measurement", "id": "scenario-specific-hazard-evidence-q01" }, { "text": "Which documented controls address ignition, oxygen displacement, pressure release and refrigerated-liquid contact where relevant?", "kind": "action", "id": "scenario-specific-hazard-evidence-q02" } ] } ] }, { "id": "classification-and-permitted-use", "name": "Classification and permitted use", "description": "Links the identified supply form and application to current classification and use requirements.", "findings": [ { "id": "jurisdiction-qualified-requirements", "name": "Jurisdiction-qualified requirements", "description": "Record applicable hazard classification, transport identity, exposure guidance and plant-treatment restrictions with dated sources.", "questions": [ { "text": "Which current safety data sheet and official jurisdictional sources establish classification, transport requirements and applicable exposure limits?", "kind": "provenance", "id": "jurisdiction-qualified-requirements-q01" }, { "text": "What grade, authorization or application conditions must be satisfied before this ethylene can be used for the proposed plant treatment or industrial purpose?", "kind": "action", "id": "jurisdiction-qualified-requirements-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 description uses recalled knowledge; no sources were consulted.", "Commercial grades have supplier-specific purity and impurity specifications; the listed kinds include grades and physical supply forms.", "Verify physical-property reference conditions, current jurisdiction-specific hazard classifications and applicable exposure limits before operational use." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of ethylene 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": [ "Polymer-grade ethylene", "Chemical-grade ethylene", "Compressed gaseous ethylene", "Refrigerated liquid ethylene" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of ethylene 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": "IUPAC nomenclature", "value_or_pattern": "ethene", "note": "Ethylene is the widely used common name." }, { "scheme": "CAS Registry Number", "value_or_pattern": "74-85-1", "note": "Identifies ethylene as a chemical substance." }, { "scheme": "PubChem CID", "value_or_pattern": "6325", "note": "Compound identifier for ethylene." }, { "scheme": "EC number", "value_or_pattern": "200-815-3", "note": "European chemical inventory identifier." }, { "scheme": "UN dangerous goods number", "value_or_pattern": "UN 1962", "note": "Ethylene in the compressed-gas transport entry; refrigerated liquid has a separate entry." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of ethylene 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 for communicating flammability and gas-under-pressure hazards.", "United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations: transport identification and requirements for ethylene consignments." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of ethylene 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": [ "Monomer for polyethylene manufacture.", "Feedstock for ethylene oxide and downstream ethylene glycol production.", "Feedstock for ethylene dichloride and downstream vinyl chloride production.", "Reactant with benzene to produce ethylbenzene for styrene manufacture.", "Controlled fruit ripening and produce degreening through its plant-hormone activity." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of ethylene 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": "28.05", "unit": "g/mol" }, { "quantity": "Normal boiling point at approximately 101.325 kPa", "typical_range": "approximately -103.7", "unit": "°C" }, { "quantity": "Melting point", "typical_range": "approximately -169.2", "unit": "°C" }, { "quantity": "Flammability limits in air near ambient conditions", "typical_range": "approximately 2.7-36", "unit": "% by volume" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of ethylene 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": [ "Leaks can form readily ignitable mixtures with air and cause fire or explosion.", "Accumulation in enclosed spaces can displace oxygen and cause asphyxiation.", "Heated pressure containers can rupture.", "Refrigerated liquid can cause cold burns and embrittle unsuitable materials.", "Unintended exposure of sensitive produce can accelerate ripening, senescence and spoilage." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of ethylene 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": [ "Ethene is the systematic name, while ethylene remains common in industrial and biological usage.", "Hazard-label implementation, occupational requirements and authorisation of agricultural uses depend on jurisdiction." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of ethylene 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": "ethane", "difference": "Ethane is C₂H₆ with a carbon-carbon single bond; ethylene is C₂H₄ with a double bond." }, { "name": "acetylene", "difference": "Acetylene is C₂H₂ with a carbon-carbon triple bond." }, { "name": "polyethylene", "difference": "Polyethylene is a polymer made from ethylene units, rather than the molecular monomer." }, { "name": "ethylene oxide", "difference": "Ethylene oxide is C₂H₄O with an oxygen-containing three-membered ring and distinct chemical hazards." }, { "name": "ethylene glycol", "difference": "Ethylene glycol is C₂H₆O₂, a diol that is liquid under ordinary ambient conditions." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of ethylene this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative sources will establish and reconcile ethylene's CAS number, PubChem CID, EC number and registry definition?", "Which reference datasets should supply melting point, pressure-qualified boiling point, critical properties and density or compressibility calculations, with uncertainties?", "What impurity limits distinguish the actual supplier grades relevant to polymerization, other chemical conversions and plant treatment?", "Which current jurisdiction-specific classifications, transport designations and occupational exposure requirements apply to each intended supply form and use?", "Which species- and stage-specific evidence establishes effective plant-treatment exposures, adverse-response thresholds and applicable use authorizations?" ], "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 ethylene, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to identify ethylene, assess the condition and fitness of a particular quantity, and determine appropriate handling or use from its composition, physical state and intended application.", "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: Ethylene-13C2, Ethylene-13C1.", "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 79 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 ethylene, 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": [ "Ethylene-13C2", "Ethylene-13C1" ] } ], "standing": "Described in 79 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 ethylene from another, and a ethylene 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 ethylene, 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 ethylene, 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 ethylene 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 ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene, 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 ethylene, 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 ethylene 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 ethylene from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene, 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 ethylene, 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 ethylene 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 ethylene is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a ethylene, 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 ethylene, 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 ethylene 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 ethylene is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a ethylene, 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 ethylene, 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 ethylene 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 ethylene, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a ethylene 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 ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a ethylene performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a ethylene, 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 ethylene, 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 ethylene 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 ethylene.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a ethylene at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a ethylene, 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 ethylene, 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 ethylene 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 ethylene there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a ethylene, 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 ethylene, 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 ethylene 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 ethylene 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 ethylene 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 ethylene 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 ethylene 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 ethylene, 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 ethylene 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 ethylene 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 ethylene 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 ethylene, 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 ethylene 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 ethylene and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a ethylene, 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 ethylene, 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 ethylene 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 ethylene is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a ethylene, 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 ethylene, 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 ethylene 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 } } } }