{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.acetic-acid","code":"thing-q47512","url":"https://ver.cy/models/thing/q47512/","name":"acetic acid","alternateNames":["acetic acid c-13","acetic acid c-11","acetic acid c-14"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"Acetic acid (ethanoic acid, CH3COOH) is a two-carbon monocarboxylic acid that, when pure, is a colourless, hygroscopic liquid near ordinary room temperature and is the principal acid in vinegar.","purpose":"Enable an AI agent to identify acetic acid, assess the composition and condition of a particular sample, and determine which uses and handling actions its evidence supports.","scope":{"in":["Chemical identity and authoritative registry identifiers for acetic acid, also called ethanoic acid","Acetic acid content, water content, impurities and documented grade","Physical state and measured properties under specified temperature, pressure and composition","Acid-base behaviour, chemical compatibility and relevant reaction potential","Concentration-dependent hazards, exposure controls and jurisdiction-specific classifications","Sample provenance, storage condition and evidence of suitability for an intended use"],"out":["Vinegar and other formulated products as complete products","Acetate salts, acetate esters and acetic anhydride as separately identified substances","Manufacturing plants, fermentation systems and synthesis processes","Biological acetate metabolism and organism-level effects","Equipment designs for storage, dosing, ventilation or processing","Clinical management of exposure and site-wide emergency response"],"boundaries":[]},"distinguishingFeatures":["Chemical identity must establish CH3COOH, distinguishing it from formic acid, other carboxylic acids and similarly named compounds.","An acetate salt contains an associated counterion and is not interchangeable with acetic acid; an aqueous sample may contain both acetic acid and acetate according to its conditions.","Acetic anhydride and acetate esters have different chemical structures and must not be accepted as acetic acid on name similarity alone.","A vinegar label identifies a product containing acetic acid, not a pure acetic acid sample; other constituents and the concentration basis must be recorded.","The label 'glacial acetic acid' requires supporting composition evidence; it does not by itself establish exact purity, absence of water or current physical state."],"structure":{"bundles":[{"id":"acetic-acid-identity","name":"Acetic acid identity","description":"Establishes what the registered substance is and how samples and related substances attach to that identity.","layers":[{"id":"molecular-and-registry-identity","name":"Molecular and registry identity","description":"Connects the molecular identity to verified names and external substance records.","findings":[{"id":"identity-anchor","name":"Identity anchor","description":"Record evidence that the material is acetic acid and that each identifier refers to the same substance.","questions":[{"text":"Which authoritative records establish the names acetic acid and ethanoic acid, molecular identity CH3COOH, CAS number, PubChem CID and EC number?","id":"identity-anchor-q01","kind":"definition"},{"text":"Which supplier or analytical records connect this sample to that identity, and do any identifiers instead describe a mixture?","id":"identity-anchor-q02","kind":"provenance"}]}]},{"id":"substance-and-mixture-boundaries","name":"Substance and mixture boundaries","description":"Separates acetic acid identity from aqueous speciation, related compounds and product identity.","findings":[{"id":"acid-acetate-and-product-boundary","name":"Acid, acetate and product boundary","description":"Record whether a reference concerns acetic acid, an aqueous acid-acetate system or a product requiring its own model.","questions":[{"text":"Does the material designation refer to acetic acid, an acetate salt, an ester, acetic anhydride or a formulation such as vinegar?","id":"acid-acetate-and-product-boundary-q01","kind":"boundary"},{"text":"For an aqueous or buffered sample, does the reported amount mean undissociated acetic acid, total acid-acetate content or titratable acidity?","id":"acid-acetate-and-product-boundary-q02","kind":"definition"}]}]}]},{"id":"composition-and-grade","name":"Composition and grade","description":"Describes how much acetic acid a sample contains and whether its composition supports a claimed grade or use.","layers":[{"id":"acid-and-water-assay","name":"Acid and water assay","description":"Makes concentration claims comparable and identifies what an assay actually measures.","findings":[{"id":"quantified-composition","name":"Quantified composition","description":"Require explicit concentration bases and independent evidence where total acidity does not uniquely identify acetic acid content.","questions":[{"text":"What are the acetic acid and water contents, expressed on which bases and measured by which methods?","id":"quantified-composition-q01","kind":"measurement"},{"text":"Could other acids or buffering constituents affect the assay, and what evidence distinguishes acetic acid content from total titratable acidity?","id":"quantified-composition-q02","kind":"measurement"}]}]},{"id":"impurities-and-use-specifications","name":"Impurities and use specifications","description":"Connects batch evidence to explicit acceptance criteria.","findings":[{"id":"grade-supported-use","name":"Grade-supported use","description":"Treat grade and 'glacial' designations as claims requiring specifications and sample-level evidence.","questions":[{"text":"Which specification defines the claimed grade or glacial designation, and which batch certificate supports compliance?","id":"grade-supported-use-q01","kind":"provenance"},{"text":"Which impurity limits and analytical detection limits must be satisfied before this sample can be accepted for the intended use?","id":"grade-supported-use-q02","kind":"action"}]}]}]},{"id":"physical-state-and-chemical-behaviour","name":"Physical state and chemical behaviour","description":"Relates observable sample condition and chemical behaviour to composition and operating conditions.","layers":[{"id":"phase-and-property-envelope","name":"Phase and property envelope","description":"Records phase observations and condition-specific physical properties.","findings":[{"id":"condition-matched-properties","name":"Condition-matched properties","description":"Associate each property value with composition, temperature, pressure and its measurement or reference basis.","questions":[{"text":"What phase is observed, and what melting/freezing, boiling, density and vapour-pressure data apply to this composition under the relevant conditions?","id":"condition-matched-properties-q01","kind":"measurement"},{"text":"If the sample is partially crystallized, what approved conditioning and sampling procedure establishes a representative composition before use?","id":"condition-matched-properties-q02","kind":"action"}]}]},{"id":"acidity-and-reaction-context","name":"Acidity and reaction context","description":"Separates acid strength, measured acidity and compatibility for specific proposed contacts.","findings":[{"id":"reaction-relevant-acidity","name":"Reaction-relevant acidity","description":"Record the solvent and composition context needed to interpret acidity and assess reaction proposals.","questions":[{"text":"Which solvent, concentration and temperature define the reported pH, dissociation data or titratable acidity?","id":"reaction-relevant-acidity-q01","kind":"measurement"},{"text":"For proposed contact with bases, oxidizers, metals or other reagents, what evidence establishes heat release, gas generation and compatibility constraints?","id":"reaction-relevant-acidity-q02","kind":"action"}]}]}]},{"id":"hazards-and-material-stewardship","name":"Hazards and material stewardship","description":"Connects actual composition and sample history to applicable controls and permitted handling.","layers":[{"id":"classification-and-exposure","name":"Classification and exposure","description":"Identifies applicable hazard evidence and occupational exposure criteria.","findings":[{"id":"composition-specific-hazard-record","name":"Composition-specific hazard record","description":"Match classifications and exposure limits to the material, jurisdiction and current source.","questions":[{"text":"Which current SDS and jurisdiction-specific GHS rules establish the skin, eye, inhalation and flammability classifications for this composition?","id":"composition-specific-hazard-record-q01","kind":"provenance"},{"text":"Which occupational exposure limits apply, with what units, averaging periods and measurement methods?","id":"composition-specific-hazard-record-q02","kind":"measurement"}]}]},{"id":"storage-transfer-and-disposition","name":"Storage, transfer and disposition","description":"Tracks whether a sample remains suitable for storage, transfer, use or disposal.","findings":[{"id":"sample-condition-and-handling-decision","name":"Sample condition and handling decision","description":"Use container compatibility, handling history and current evidence to support a specific next action.","questions":[{"text":"What container, closure and contact-material compatibility evidence applies at this acetic acid concentration and storage temperature?","id":"sample-condition-and-handling-decision-q01","kind":"action"},{"text":"What evidence of water uptake, contamination, leakage or composition change requires retesting, quarantine or routing to an approved waste process?","id":"sample-condition-and-handling-decision-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-identifiers-q01","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.","questions":[{"text":"Which of these standards and regulation hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-standards-and-regulation-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these typical measurements hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these regional variation hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of acetic acid this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe acetic acid, its properties and uses, citing chemistry sources.","Store and handle it following its safety data sheet in places the agent is authorized to work."],"mustNot":["Store concentrated acid in food or drink containers or unlabelled bottles.","Advise mixing it with bleach or other incompatible chemicals.","Present concentrated acid as safe to use like household vinegar.","Pour concentrated acid into drains or the environment."],"requiresHuman":["Responding to a spill, splash or exposure of concentrated acid."]},"ethics":{"considerations":["Mistaking concentrated acid for vinegar has caused serious burns.","Workers handling it need protection and honest hazard information."],"affectedParties":["Workers","Household users","Children"]},"owners":{"steward":"The person or business that holds it; chemical regulators control labelling.","roles":[],"masterSystems":[]},"relations":[{"target":"Q2698455","type":"parent","note":"registry parent class"},{"target":"Q63434442","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.acetic-acid","Wikidata: Q47512 (https://www.wikidata.org/wiki/Q47512)"]},"properties":{"applicability":"required","items":["Chemical and regulatory identity: CH3COOH; verified CAS number, PubChem CID and EC number with source and identity scope","Acetic acid content: % mass fraction, % volume fraction or mol/L, with explicit basis, method and applicable temperature","Water content: % mass fraction or mg/kg, with analytical method and uncertainty","Impurity profile: Named impurities with mg/kg or other explicit units, detection limits and method","Grade and conformity evidence: Declared technical, reagent, food or other grade; named specification, revision and conformity status","Physical state: Liquid, solid or partially crystallized, with temperature, pressure and composition","Physical property measurements: Melting/freezing range in °C, boiling point in °C at stated pressure, density in kg/m³ and vapour pressure in Pa at stated temperature","Aqueous acidity: pH and titratable acidity with concentration, temperature, method and titration endpoint","Hazard and exposure status: Applicable GHS implementation, concentration-specific classification, SDS revision and exposure limits with units and averaging periods"]},"recognition":{"applicability":"required","items":["A colourless liquid with a sharp vinegar smell.","Concentrated grades are labelled as corrosive and flammable."]},"capabilities":{"applicability":"required","items":["Resolve a sample label to acetic acid and flag mismatches with acetate salts, esters, anhydride or formulated products.","Compare measured composition and certification against the requirements of a proposed use.","Calculate acetic acid quantities or dilution targets when concentration basis, density where needed and an approved procedure are available.","Assess whether crystallization, water uptake or contamination requires conditioning, resampling or quarantine.","Screen proposed storage, transfer and reaction contacts against documented compatibility evidence.","Identify the applicable hazard controls and unresolved evidence before authorizing handling."]},"hazards":{"applicability":"required","items":["Concentrated acid burns skin and eyes and its vapour irritates the lungs.","Glacial acetic acid is flammable."]},"interfaces":{"applicability":"required","items":["Globally Harmonized System of Classification and Labelling of Chemicals, United Nations."]},"context":{"applicability":"required","items":["Acetic acid occurs in vinegar and is used in food preparation and preservation in appropriately formulated food products.","It is also used as a laboratory reagent and an industrial feedstock for producing acetate compounds and other chemicals.","Its suitability for a particular use depends on concentration, purity and the other substances present."]}},"sources":[{"title":"Wikidata item Q47512: acetic acid","url":"https://www.wikidata.org/wiki/Q47512","note":"identity and sense of the item"},{"title":"Wikipedia: Acetic acid","url":"https://en.wikipedia.org/wiki/Acetic_acid","note":"general description of the item"}],"openQuestions":["Does an existing Vercy world model already cover acetic acid and require this registry entry to link to it instead of creating a second publication?","Which authoritative identity records and property references should anchor the model, and what composition and condition ranges do their values cover?","Which specifications define glacial, reagent, technical and food grades in the intended deployment jurisdictions?","Which concentration-dependent hazard classifications and current occupational exposure limits apply where the material will be used?","Which intended uses require impurity-specific testing, validated container compatibility or conditioning procedures beyond a general acetic acid assay?"],"resources":{"spec":"/models/things/publications/thing-q47512/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q47512/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-07T11:54:16Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:31+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}