{ "model": { "rank": 6073, "code": "thing-q61457", "model_id": "vr.tr.acetaldehyde", "name": "acetaldehyde", "purpose": "Enable an AI agent to identify acetaldehyde, assess the condition and reliability of a particular quantity or observation, and determine which handling or use decisions have sufficient evidence.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q61457/", "tier": 2, "score": 62, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 62, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q61457", "url": "https://www.wikidata.org/wiki/Q61457", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T11:25:07Z", "providers": [ "Codex", "Grok" ], "missingProviders": [], "pass": 2, "cost": { "grok": { "usd": 0.01476042, "turns": 1, "seconds": 199.8, "error": null }, "codex": { "seconds": 83, "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: 01a07b97-b0a1-7582-9490-cca0704fc296\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: acetaldehyde\nRegistry id: vr.tr.acetaldehyde\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n" } } }, "metaModel": { "id": "THING-Q61457", "registryId": "vr.tr.acetaldehyde", "name": "acetaldehyde", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q61457/", "model": { "registry_id": "vr.tr.acetaldehyde", "name": "acetaldehyde", "purpose": "Enable an AI agent to identify acetaldehyde, assess the condition and reliability of a particular quantity or observation, and determine which handling or use decisions have sufficient evidence.", "definition": "Acetaldehyde (IUPAC: ethanal, CH₃CHO) is the two-carbon aliphatic aldehyde: a low-boiling, water-miscible, highly flammable liquid that is a C₂ industrial intermediate, a ubiquitous fermentation and atmospheric oxidation product, and the first oxidative metabolite of ethanol in humans.", "scope_statement": "Own the substance-specific identity, composition, physical condition, chemical stability, analytical evidence and action constraints of acetaldehyde under registry entry vr.tr.acetaldehyde in PHY / PHY.MAT, including its occurrence as a constituent without owning the containing system.", "in_scope": [ "Identification of acetaldehyde, also called ethanal, and discrimination from related compounds", "Acetaldehyde content in neat material, solutions, vapours and sampled matrices", "Temperature, pressure, phase and containment conditions relevant to volatility", "Evidence of chemical change, contamination and stabilization", "Measurement validity and acetaldehyde-specific handling or use constraints" ], "out_of_scope": [ "Complete composition and quality models of beverages, foods, fuels or other host mixtures", "Human ethanol metabolism, clinical diagnosis and treatment", "Design and operation of industrial synthesis plants", "Engineering certification of containers, ventilation and fire-protection systems", "Independent substance models for ethanol, acetic acid, formaldehyde and acetaldehyde reaction products" ], "distinguishing_features": [ "Require identity evidence consistent with CH3CHO and CAS 75-07-0; the formula alone does not establish molecular connectivity. Reference: [NIOSH acetaldehyde entry](https://www.cdc.gov/niosh/npg/npgd0001.html).", "Require analytical discrimination of the aldehyde structure from ethanol and acetic acid; an origin in ethanol processing does not establish acetaldehyde identity.", "Require a validated method to separate acetaldehyde from formaldehyde and other carbonyls; a general aldehyde-positive result is insufficient.", "Distinguish measured acetaldehyde monomer from derivatives or oligomeric products; any result reported as acetaldehyde equivalents must explain its conversion basis.", "Use the reported boiling point near 20.2 °C as a condition-dependent plausibility check rather than a unique identifier or a rule that every sample is liquid. Reference: [ICSC 0009](https://inchem.org/documents/icsc/icsc/eics0009.htm)." ], "characteristics": [ { "name": "Identity evidence", "kind": "relation", "unit_or_values": "Links to identifier records, reference material and discriminating analytical observations", "why_it_matters": "Prevents a supplier name or nonspecific carbonyl signal from becoming confirmed identity." }, { "name": "Material context", "kind": "category", "unit_or_values": "Neat substance; formulated solution; gas mixture; trace constituent; unknown", "why_it_matters": "Determines which physical-property assumptions and measurement interpretations are applicable." }, { "name": "Acetaldehyde content", "kind": "measurement", "unit_or_values": "Mass fraction, mol/L, mg/L, mg/m3 or ppmv, with matrix, basis, uncertainty and timestamp", "why_it_matters": "Supports comparison only when concentration basis and sampling context match." }, { "name": "Temperature", "kind": "measurement", "unit_or_values": "°C or K, with measurement location and timestamp", "why_it_matters": "Helps interpret phase, evaporative loss and containment requirements." }, { "name": "Absolute pressure", "kind": "measurement", "unit_or_values": "kPa absolute, identifying sample or headspace", "why_it_matters": "Makes phase and gas-concentration statements interpretable." }, { "name": "Observed phase", "kind": "state", "unit_or_values": "Liquid; vapour; solid; multiphase; dissolved constituent; unknown", "why_it_matters": "Prevents the state of the host matrix from being mistaken for that of neat acetaldehyde." }, { "name": "Stabilization status", "kind": "state", "unit_or_values": "Documented treatment with identity and amount where applicable; explicitly unstabilized; unknown", "why_it_matters": "Supports assessment against the specific product's storage and use requirements." }, { "name": "Chemical-change indicators", "kind": "measurement", "unit_or_values": "Method-specific results for acidity, peroxides and identified transformation products, including detection limits", "why_it_matters": "Makes suspected deterioration assessable without treating age or appearance as proof." }, { "name": "Exposure and storage history", "kind": "relation", "unit_or_values": "Dated links to opening, transfer, air contact, light exposure and temperature excursions", "why_it_matters": "Connects the present assessment to events that may have altered the material." }, { "name": "Analytical validity", "kind": "state", "unit_or_values": "Validated for matrix and range; qualified estimate; invalid; unresolved", "why_it_matters": "Controls whether a reported amount can support a proposed decision." }, { "name": "Disposition", "kind": "state", "unit_or_values": "Pending assessment; accepted for named use; restricted; quarantined; rejected", "why_it_matters": "Expresses an evidence-backed decision for a particular quantity and purpose." } ], "affordances": [ "Reconcile an acetaldehyde label with analytical identity evidence and flag unresolved mismatches.", "Compare acetaldehyde amounts across samples after checking matrix, units and measurement basis.", "Assess whether storage or transfer history requires fresh analysis or quarantine.", "Evaluate suitability as a reagent, reference material or measured constituent against a named specification.", "Gate sampling, transfer, storage or disposal decisions against documented substance-specific controls.", "Link observed loss or formation of acetaldehyde to a separately modeled process without assuming its cause." ] }, "sources": [ { "id": "pubchem-177", "title": "Acetaldehyde, PubChem Compound Summary, CID 177 - National Center for Biotechnology Information (NCBI/NLM)", "url": "https://pubchem.ncbi.nlm.nih.gov/compound/177", "what_it_supports": "Identifiers (CAS, EC, InChIKey, formula), physical properties, GHS/toxicity summaries, and common uses.", "url_status": "live" }, { "id": "nist-webbook", "title": "Acetaldehyde - NIST Chemistry WebBook, National Institute of Standards and Technology", "url": "https://webbook.nist.gov/cgi/cbook.cgi?ID=C75070", "what_it_supports": "Evaluated thermophysical data: boiling and melting points, density, vapor pressure, flash/autoignition context.", "url_status": "live" }, { "id": "iarc-100e", "title": "IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, Volume 100E: Personal Habits and Indoor Combustions (acetaldehyde associated with alcoholic beverages) - International Agency for Research on Cancer / WHO", "url": "", "what_it_supports": "Carcinogenicity classification: acetaldehyde from alcoholic beverages as Group 1; distinction from acetaldehyde as a commodity chemical (Group 2B in earlier monographs)." }, { "id": "ullmann-acetaldehyde", "title": "Acetaldehyde, Ullmann's Encyclopedia of Industrial Chemistry - Wiley-VCH", "url": "", "what_it_supports": "Industrial manufacture (Wacker oxidation of ethylene; historical acetylene hydration), derivative uses, handling, polymerization and flammability hazards." } ], "structure": { "bundles": [ { "id": "identity-and-material-boundary", "name": "Identity and material boundary", "description": "Establish what is being identified and how acetaldehyde relates to the material carrying it.", "rationale": "A named substance, a commercial solution and an analytical signal require different identity claims.", "layers": [ { "id": "molecular-identification", "name": "Molecular identification", "description": "Require evidence that distinguishes acetaldehyde from nearby chemical identities.", "findings": [ { "id": "acetaldehyde-identity-evidence", "name": "Acetaldehyde identity evidence", "description": "Record the reference identity and observations supporting or contradicting assignment to acetaldehyde.", "questions": [ { "text": "Which identifier and structural reference anchor this material to acetaldehyde?", "kind": "definition", "id": "acetaldehyde-identity-evidence-q01" }, { "text": "What analytical evidence distinguishes it from ethanol, acetic acid and other aldehydes?", "kind": "measurement", "id": "acetaldehyde-identity-evidence-q02" } ] } ] }, { "id": "constituent-and-product-boundary", "name": "Constituent and product boundary", "description": "Separate acetaldehyde itself from its host mixture and chemically distinct products.", "findings": [ { "id": "represented-acetaldehyde-fraction", "name": "Represented acetaldehyde fraction", "description": "Declare whether the record concerns monomer, a formulated material or an operationally defined analytical quantity.", "questions": [ { "text": "Does this record describe neat acetaldehyde, a solution, a vapour mixture or a trace constituent?", "kind": "boundary", "id": "represented-acetaldehyde-fraction-q01" }, { "text": "Does the reported amount include acetaldehyde released from other species during analysis, and how is that distinguished from initially present monomer?", "kind": "definition", "id": "represented-acetaldehyde-fraction-q02" } ] } ] } ] }, { "id": "composition-and-measurement", "name": "Composition and measurement", "description": "Define how much acetaldehyde is present and whether the measurement represents the original material.", "rationale": "Volatile-analyte loss, matrix interference and ambiguous reporting bases can invalidate otherwise precise results.", "layers": [ { "id": "content-and-matrix", "name": "Content and matrix", "description": "Record acetaldehyde quantity alongside the composition context needed to interpret it.", "findings": [ { "id": "content-on-explicit-basis", "name": "Content on an explicit basis", "description": "Associate each amount with its matrix, units, uncertainty and relevant impurities.", "questions": [ { "text": "What acetaldehyde concentration or purity was measured, on which mass, volume or gas basis?", "kind": "measurement", "id": "content-on-explicit-basis-q01" }, { "text": "Which solvent, water content, additives or co-occurring carbonyls affect the intended interpretation?", "kind": "boundary", "id": "content-on-explicit-basis-q02" } ] } ] }, { "id": "sampling-and-assay-integrity", "name": "Sampling and assay integrity", "description": "Preserve the connection between the original material and its analytical result.", "findings": [ { "id": "representative-acetaldehyde-result", "name": "Representative acetaldehyde result", "description": "Require method suitability and evidence addressing losses or changes during sampling and preparation.", "questions": [ { "text": "What sampling, sealing, preservation and elapsed-time records support the result?", "kind": "provenance", "id": "representative-acetaldehyde-result-q01" }, { "text": "How were selectivity, recovery, calibration, detection limits and possible preparation-induced acetaldehyde formation assessed?", "kind": "measurement", "id": "representative-acetaldehyde-result-q02" } ] } ] } ] }, { "id": "phase-volatility-and-containment", "name": "Phase, volatility and containment", "description": "Connect acetaldehyde's observed physical condition to temperature, pressure and its immediate enclosure.", "rationale": "Its low boiling point makes ambient conditions and headspace relevant to both inventory and handling.", "layers": [ { "id": "physical-condition", "name": "Physical condition", "description": "Describe the actual material state without applying neat-substance properties indiscriminately to mixtures.", "findings": [ { "id": "condition-qualified-phase", "name": "Condition-qualified phase", "description": "Record phase observations with measured conditions and distinguish observation from prediction.", "questions": [ { "text": "What temperature, absolute pressure and phase were observed at the stated time?", "kind": "measurement", "id": "condition-qualified-phase-q01" }, { "text": "If phase behaviour is predicted, what composition-specific evidence supports using that prediction?", "kind": "provenance", "id": "condition-qualified-phase-q02" } ] } ] }, { "id": "headspace-and-loss", "name": "Headspace and loss", "description": "Assess the relationship between contained acetaldehyde, vapour space and possible release.", "findings": [ { "id": "containment-condition", "name": "Containment condition", "description": "Link acetaldehyde condition to closure integrity, headspace observations and transfer history.", "questions": [ { "text": "What evidence describes closure integrity, headspace pressure and any acetaldehyde loss or release?", "kind": "measurement", "id": "containment-condition-q01" }, { "text": "Which verified containment and temperature requirements must hold before the proposed transfer?", "kind": "action", "id": "containment-condition-q02" } ] } ] } ] }, { "id": "reactivity-and-storage-history", "name": "Reactivity and storage history", "description": "Track evidence of chemical change and conditions requiring reassessment.", "rationale": "Air-related peroxide formation and polymerization hazards make exposure history decision-relevant. Reference: [ICSC 0009](https://inchem.org/documents/icsc/icsc/eics0009.htm).", "layers": [ { "id": "chemical-change-evidence", "name": "Chemical-change evidence", "description": "Separate measured deterioration from hypotheses about its cause.", "findings": [ { "id": "transformation-indicators", "name": "Transformation indicators", "description": "Record relevant analytical changes without inferring stability from appearance alone.", "questions": [ { "text": "What measurements indicate changes in acetaldehyde content, acidity, peroxide content or transformation products?", "kind": "measurement", "id": "transformation-indicators-q01" }, { "text": "Which suspected change remains unconfirmed, and what evidence would distinguish the competing explanations?", "kind": "boundary", "id": "transformation-indicators-q02" } ] } ] }, { "id": "stabilization-and-contact-history", "name": "Stabilization and contact history", "description": "Connect product-specific stabilization and exposure records to permitted storage or use.", "findings": [ { "id": "storage-validity", "name": "Storage validity", "description": "Assess whether documented conditions remain compatible with the particular acetaldehyde material.", "questions": [ { "text": "What stabilization, opening dates, air exposure and temperature excursions are documented?", "kind": "provenance", "id": "storage-validity-q01" }, { "text": "Has contact with incompatible materials or a storage deviation triggered a product-specific reassessment requirement?", "kind": "action", "id": "storage-validity-q02" } ] } ] } ] }, { "id": "hazards-and-use-disposition", "name": "Hazards and use disposition", "description": "Turn substance condition and contextual hazard evidence into a bounded decision about a proposed action.", "rationale": "Acetaldehyde's extreme flammability requires explicit ignition and release controls; acceptability also depends on the material and intended operation. Reference: [ICSC 0009](https://inchem.org/documents/icsc/icsc/eics0009.htm).", "layers": [ { "id": "operation-specific-exposure", "name": "Operation-specific exposure", "description": "Relate acetaldehyde concentration and release potential to the proposed operation.", "findings": [ { "id": "applicable-hazard-controls", "name": "Applicable hazard controls", "description": "Require applicable safety evidence and verified controls before treating an operation as permissible.", "questions": [ { "text": "Which current product safety document and jurisdiction-specific exposure criteria apply to this form and use?", "kind": "provenance", "id": "applicable-hazard-controls-q01" }, { "text": "What evidence confirms adequate ignition control, containment and exposure control for the proposed operation?", "kind": "action", "id": "applicable-hazard-controls-q02" } ] } ] }, { "id": "fitness-and-release-decision", "name": "Fitness and release decision", "description": "Record a purpose-specific disposition with explicit evidence gaps and reassessment triggers.", "findings": [ { "id": "acetaldehyde-use-authorization", "name": "Acetaldehyde use authorization", "description": "Tie acceptance, restriction or quarantine to a named specification and responsible decision.", "questions": [ { "text": "Does the measured identity, composition and stability satisfy the requirements of the named use?", "kind": "action", "id": "acetaldehyde-use-authorization-q01" }, { "text": "What missing evidence or subsequent change requires withholding use, quarantine or renewed assessment?", "kind": "action", "id": "acetaldehyde-use-authorization-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-kinds", "name": "Kinds and varieties", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Technical/industrial acetaldehyde (bulk chemical, typically ≥99%)", "High-purity/reagent acetaldehyde", "Stabilized (polymerization-inhibited) versus uninhibited liquid", "Aqueous acetaldehyde solutions (a common handling form)", "Food/flavour-grade acetaldehyde (FEMA 2003)", "Free versus sulfite-bound acetaldehyde in wine, beer and spirits", "Endogenous metabolic acetaldehyde (ethanol → alcohol dehydrogenase → acetaldehyde)", "Ambient and indoor-air acetaldehyde as a volatile organic compound" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "scheme": "CAS Registry Number", "value_or_pattern": "75-07-0", "note": "Primary chemical identity for regulation, transport and inventory listings." }, { "scheme": "EC / EINECS", "value_or_pattern": "200-836-8", "note": "EU inventory number; CLP Index 605-003-00-6." }, { "scheme": "IUPAC name", "value_or_pattern": "ethanal", "note": "Systematic name; industry and OSHA/EPA texts still use acetaldehyde." }, { "scheme": "UN number", "value_or_pattern": "UN 1089", "note": "Dangerous-goods identity; Class 3, Packing Group I." }, { "scheme": "PubChem CID", "value_or_pattern": "177", "note": "NCBI compound record." }, { "scheme": "ChEBI", "value_or_pattern": "CHEBI:15343", "note": "Ontology identifier used in metabolic pathway databases." }, { "scheme": "InChIKey", "value_or_pattern": "IKEHLMZTGIFGAA-UHFFFAOYSA-N", "note": "Structure hash for the parent molecule." }, { "scheme": "HS / CN code", "value_or_pattern": "2912.12", "note": "Harmonized System heading for acetaldehyde as such." }, { "scheme": "FEMA", "value_or_pattern": "2003", "note": "Flavouring-substance number." }, { "scheme": "Wikidata", "value_or_pattern": "Q31550", "note": "Catalogue item for the chemical species." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "IARC/WHO Monographs: acetaldehyde Group 2B as a chemical; acetaldehyde associated with consumption of alcoholic beverages Group 1 (Vol. 100E).", "OSHA 29 CFR 1910.1000 Table Z-1: PEL 200 ppm (360 mg·m⁻³) 8-hour TWA.", "ACGIH TLVs: ceiling value 25 ppm (widely cited occupational benchmark, tighter than the OSHA PEL).", "EU CLP Regulation (EC) No 1272/2008, Index 605-003-00-6: harmonised classification including Flam. Liq. 1 and carcinogenicity/mutagenicity entries; REACH (EC) 1907/2006 registered substance.", "UN Model Regulations / ADR/RID/IMDG: UN 1089, Class 3, Packing Group I.", "US EPA Clean Air Act: listed Hazardous Air Pollutant.", "California Proposition 65 (OEHHA): listed carcinogen.", "FDA flavouring framework and FEMA GRAS (FEMA 2003); JECFA flavouring evaluations for acetaldehyde as a food flavour." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Feedstock for pentaerythritol (alkyd resins, coatings, PETN pathway) and for pyridine/alkylpyridine bases.", "Historical and residual route to acetic acid and acetate esters; largely displaced by methanol carbonylation for acetic acid.", "Flavour constituent (green-apple / bruised-apple note) added at low milligram-per-kilogram levels, and formed in situ in wine, beer, cider and spirits.", "Human metabolite of beverage ethanol; the species responsible for alcohol flush when ALDH2 is deficient.", "Ambient and indoor VOC from combustion, tobacco smoke, vehicle exhaust and photochemical oxidation of VOCs.", "Laboratory reagent and calibration standard; stored cold because it boils near room temperature." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "quantity": "Normal boiling point", "typical_range": "20.1-20.4", "unit": "°C" }, { "quantity": "Melting point", "typical_range": "−123.5", "unit": "°C" }, { "quantity": "Density at 20 °C", "typical_range": "0.780-0.785", "unit": "g·cm⁻³" }, { "quantity": "Closed-cup flash point", "typical_range": "about −39", "unit": "°C" }, { "quantity": "Autoignition temperature", "typical_range": "140-185", "unit": "°C" }, { "quantity": "Explosive limits in air", "typical_range": "4-57", "unit": "vol%" }, { "quantity": "Commercial purity", "typical_range": "≥99-99.5", "unit": "wt%" }, { "quantity": "Free acetaldehyde in still wine", "typical_range": "typically 10-80; oxidation fault often >100-125", "unit": "mg·L⁻¹" }, { "quantity": "Occupational air concentration (order of limit values)", "typical_range": "25 (ceiling) to 200 (PEL TWA)", "unit": "ppm v/v" }, { "quantity": "Peripheral blood acetaldehyde after ethanol", "typical_range": "<5 with functional ALDH2; tens of µmol·L⁻¹ with ALDH2 deficiency", "unit": "µmol·L⁻¹" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Extremely flammable vapour; flashback and vapour-cloud explosion. Explosive range in air is wide (~4-57 vol%).", "Unusually low autoignition temperature, so hot surfaces that would not ignite many solvents can ignite acetaldehyde.", "Acid-catalysed polymerization to paraldehyde (trimer) or metaldehyde (tetramer), with heat and drum/cylinder overpressure.", "Boils near ambient temperature: container overpressure unless refrigerated or kept under pressure-rated closures.", "Air oxidation toward acetic acid and peroxidic species; incompatibility with strong acids, bases, oxidizers and amines (exothermic condensations).", "Acute irritation of eyes and respiratory tract; high concentrations can cause pulmonary oedema.", "Genotoxicity and carcinogenicity, amplified when ALDH2 detoxification is slow (alcohol flush, East-Asian ALDH2*2).", "Sensory fault in wine and beer (bruised apple, sherry-like oxidation) when free acetaldehyde rises." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Dual naming: IUPAC/EU labels use ethanal; North American industry, OSHA and EPA texts use acetaldehyde.", "Enology: French and OIV texts often say éthanal; New World cellar practice says acetaldehyde, and \"aldehyde\" in a tasting note usually means this compound.", "ALDH2*2 (Glu504Lys) is common in East Asia, so population exposure to metabolic acetaldehyde after drinking is a clinical and public-health issue there in a way it is not in Europe or Africa.", "Occupational limits diverge: OSHA PEL 200 ppm TWA versus ACGIH ceiling 25 ppm and generally tighter EU national OELs; some German MAK treatment treats it as a carcinogen rather than a simple irritant.", "Production route: ethylene Wacker oxidation dominates in OECD plants; acetylene hydration persisted longer in coal-chemistry regions of China and the former Eastern bloc." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "name": "formaldehyde (methanal)", "difference": "C₁ versus C₂ aldehyde; bp about −19 °C versus +20 °C; chromotropic-acid or DNPH-HPLC retention time separates them." }, { "name": "acetone", "difference": "Ketone, not aldehyde: Tollens and Fehling tests are negative for acetone and positive for acetaldehyde; ¹H NMR shows no aldehydic proton near 9.8 ppm." }, { "name": "ethylene oxide", "difference": "Constitutional isomer (also C₂H₄O) but an epoxide: no carbonyl IR, no aldehydic ¹H; transported as UN 1040, not UN 1089." }, { "name": "ethanol", "difference": "The reduction product/precursor; no carbonyl stretch; GC retention and bp 78 °C versus 20 °C." }, { "name": "acetic acid", "difference": "The two-electron oxidation product; acidic aqueous pH and a carboxylic IR pattern versus aldehyde C-H stretch near 2720 cm⁻¹." }, { "name": "propanal", "difference": "Next homologue; GC-MS parent/fragments (m/z 58 versus 44) and longer GC retention distinguish it." }, { "name": "paraldehyde", "difference": "Cyclic trimer sold as a separate drug/solvent; bp ~124 °C and no free carbonyl until acid-catalysed depolymerization back to acetaldehyde." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of acetaldehyde this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does an existing Vercy world model already own acetaldehyde or an equivalent concept, requiring this registry entry to link to it?", "Which matrix-specific methods reliably distinguish initially present acetaldehyde from acetaldehyde released or formed during sample preparation?", "Which stabilization practices, storage durations and reassessment criteria are supported for the actual commercial grades and concentrations represented?", "Which validated thresholds for impurities and chemical-change indicators determine fitness for each intended use?", "Which current jurisdictional hazard classifications and exposure requirements apply, and how must context-specific carcinogenicity assessments be represented without overgeneralization?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 18, "questions": 28 } }, "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 acetaldehyde, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to identify acetaldehyde, assess the condition and reliability of a particular quantity or observation, and determine which handling or use decisions have sufficient evidence.", "characteristics": { "substance": "material", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured", "consumed or used up" ], "distinguishingFeatures": [ "Described in 62 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 acetaldehyde, 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": [], "standing": "Described in 62 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one acetaldehyde from another, and a acetaldehyde 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 acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a acetaldehyde 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 acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a acetaldehyde performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a acetaldehyde at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 acetaldehyde is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a acetaldehyde, 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 acetaldehyde, 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 acetaldehyde 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 } } } }