{ "model": { "rank": 4717, "code": "thing-q184782", "model_id": "vr.tr.phosphoric-acid", "name": "phosphoric acid", "purpose": "Enable an AI agent to recognise phosphoric acid, assess a particular material's composition and condition, and determine whether its documented grade and handling controls support an intended use.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q184782/", "tier": 2, "score": 73, "payload": { "layer": "wikidata", "aliases": [ "phosphate ion p-32", "trioxido(oxo)-", "(¹⁷O₄)Phosphoric acid" ], "aliasCount": 3, "merged": 3, "knownIn": 73, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.phosphoric-acid", "source": { "dataset": "wikidata", "item": "Q184782", "url": "https://www.wikidata.org/wiki/Q184782", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T20:50:57Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 26.2, "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: 01a087ef-3a43-7070-acf0-287ad8fc0c54\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: phosphoric acid\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 005: 1001", "usd": 0, "recall": true }, "codex": { "seconds": 60.3, "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: 01a087ef-3a43-7933-959d-f1fb3719b657\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: phosphoric acid\nRegistry id: vr.tr.phosphoric-acid\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (" } } }, "metaModel": { "id": "THING-Q184782", "registryId": "vr.tr.phosphoric-acid", "name": "phosphoric acid", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q184782/", "model": { "registry_id": "vr.tr.phosphoric-acid", "name": "phosphoric acid", "purpose": "Enable an AI agent to recognise phosphoric acid, assess a particular material's composition and condition, and determine whether its documented grade and handling controls support an intended use.", "definition": "Phosphoric acid, understood here as orthophosphoric acid, is the inorganic phosphorus(V) oxoacid H3PO4, a triprotic acid whose successive deprotonation produces dihydrogen phosphate, hydrogen phosphate and phosphate ions.", "scope_statement": "This model owns the identity and assessable material state of phosphoric acid, interpreted as orthophosphoric acid (H3PO4), including its aqueous solutions, concentration, impurities, grade and applicable substance documentation; it distinguishes the substance from phosphate salts, condensed phosphoric acids and formulated products containing it.", "in_scope": [ "Orthophosphoric acid identity, molecular composition and verified registry identifiers", "Pure material and aqueous solutions with explicit concentration and reporting basis", "Grade, impurity profile and batch-specific evidence of suitability", "Phase, acid-base behaviour and physical properties under stated conditions", "Concentration-specific hazards, storage compatibility and jurisdiction-specific controls" ], "out_of_scope": [ "Phosphate salts and their independent material specifications", "Polyphosphoric and metaphosphoric acids as independently specified substances", "Fertilisers, beverages, cleaners and other formulated products containing phosphoric acid", "Industrial manufacturing plants and complete production-process models", "Biological phosphate metabolism and clinical treatment models" ], "distinguishing_features": [ "Identity evidence specifies orthophosphoric acid, H3PO4, rather than using 'phosphoric acids' as an unspecified family name.", "Composition distinguishes an acid-water material from a phosphate salt containing counterions; phosphate detected in solution alone does not establish phosphoric acid identity.", "Where condensed acids may be present, analytical evidence distinguishes orthophosphate species from species containing phosphorus-oxygen-phosphorus linkages.", "An aqueous solution states its H3PO4 concentration and basis; it is not treated as pure acid merely because its product name says 'phosphoric acid'.", "Materials with the same acid identity are distinguished by documented grade and impurity limits rather than assumed interchangeable." ], "characteristics": [ { "name": "Substance identity", "kind": "category", "unit_or_values": "Orthophosphoric acid; formula H3PO4; verified CAS, PubChem and EC identifiers", "why_it_matters": "Prevents confusion with phosphate salts, condensed acids and broad commercial names." }, { "name": "Acid concentration", "kind": "measurement", "unit_or_values": "Mass fraction as % H3PO4; other bases retained explicitly with any conversion assumptions", "why_it_matters": "Controls interpretation of properties, dosing, hazards and grade specifications." }, { "name": "Water content", "kind": "measurement", "unit_or_values": "% by mass, with analytical method and uncertainty", "why_it_matters": "Distinguishes pure material from aqueous solutions and supports composition checks." }, { "name": "Phosphate speciation", "kind": "measurement", "unit_or_values": "Orthophosphate and condensed-phosphate fractions, with basis and method", "why_it_matters": "Tests whether the material remains within the orthophosphoric-acid boundary." }, { "name": "Material grade", "kind": "category", "unit_or_values": "Supplier-declared technical, food, reagent, electronic or other grade, tied to a named specification", "why_it_matters": "Grade names alone cannot establish suitability for a particular application." }, { "name": "Impurity profile", "kind": "measurement", "unit_or_values": "Analyte-specific mg/kg or other stated units, including detection limits", "why_it_matters": "Trace metals, fluoride and other relevant contaminants can constrain use independently of acid concentration." }, { "name": "Physical state and temperature", "kind": "state", "unit_or_values": "Liquid, crystalline solid or mixed phase; temperature in °C", "why_it_matters": "A material's phase must be judged against its concentration and thermal history." }, { "name": "Condition-dependent physical properties", "kind": "measurement", "unit_or_values": "Density in kg/m³, viscosity in mPa·s, transition temperatures in °C and pressure in kPa, each linked to composition", "why_it_matters": "Supports transfer and storage decisions without applying pure-substance values to solutions." }, { "name": "Acidity measurement", "kind": "measurement", "unit_or_values": "pH with measurement conditions; titratable acidity with endpoint and reporting basis", "why_it_matters": "Separates measured acidity from nominal H3PO4 concentration and phosphate speciation." }, { "name": "Applicable safety and regulatory evidence", "kind": "relation", "unit_or_values": "Links to current SDS, jurisdiction, concentration range, exposure limits and use-specific requirements", "why_it_matters": "Makes handling and eligibility decisions traceable to the actual material and applicable rules." } ], "affordances": [ "Resolve a supplier label or batch record to orthophosphoric acid and flag ambiguous phosphate identities.", "Compare a batch's concentration and impurity evidence with a named application specification.", "Assess whether observed crystallisation or changes in flow are consistent with recorded composition and temperature.", "Calculate acid quantities or dilution requirements from an explicit concentration basis, subject to an approved handling procedure.", "Select applicable safety documentation and assess container or transfer-system compatibility.", "Hold a batch for further testing when identity, contamination or grade evidence is insufficient." ] }, "sources": [], "structure": { "bundles": [ { "id": "orthophosphoric-acid-identity", "name": "Orthophosphoric acid identity", "description": "Establishes which chemical entity the registry entry covers and how a supplied material relates to it.", "rationale": "Phosphoric acid, phosphate salts and condensed phosphoric acids must not be conflated through naming or a phosphate assay.", "layers": [ { "id": "chemical-identity", "name": "Chemical identity", "description": "Connects the orthophosphoric-acid interpretation to authoritative identity records.", "findings": [ { "id": "identity-record", "name": "Identity record", "description": "Record H3PO4 identity and verified identifier mappings, retaining the source and any naming ambiguity.", "questions": [ { "text": "Does the registry's phosphoric-acid entry specifically denote orthophosphoric acid?", "kind": "definition", "id": "identity-record-q01" }, { "text": "Which authoritative records verify its CAS number, PubChem CID, EC number and accepted synonyms?", "kind": "provenance", "id": "identity-record-q02" } ] } ] }, { "id": "phosphate-boundaries", "name": "Phosphate boundaries", "description": "Distinguishes acid-water material from salts, condensed acids and formulated mixtures.", "findings": [ { "id": "species-and-mixture-boundary", "name": "Species and mixture boundary", "description": "Assess counterions, condensed phosphate species and intentionally added ingredients when classifying a sample.", "questions": [ { "text": "What evidence distinguishes this material from a phosphate salt solution or a mixture containing condensed phosphoric acids?", "kind": "boundary", "id": "species-and-mixture-boundary-q01" }, { "text": "Do additional ingredients require a separate formulated-product model linked to this substance?", "kind": "boundary", "id": "species-and-mixture-boundary-q02" } ] } ] } ] }, { "id": "concentration-grade-and-purity", "name": "Concentration, grade and purity", "description": "Describes the acid-water composition and the evidence supporting a batch's claimed quality.", "rationale": "Phosphoric acid concentration and impurity limits determine whether nominally identical materials can serve the same purpose.", "layers": [ { "id": "composition-and-assay", "name": "Composition and assay", "description": "Makes assay results interpretable across concentration conventions and analytical methods.", "findings": [ { "id": "acid-content-basis", "name": "Acid content basis", "description": "Record whether results express H3PO4, phosphorus, P2O5 equivalent or titratable acidity, without treating those measures as interchangeable.", "questions": [ { "text": "What is the measured acid content, its reporting basis, analytical method and uncertainty?", "kind": "measurement", "id": "acid-content-basis-q01" }, { "text": "Does the assay distinguish orthophosphoric acid from other phosphorus species or other contributors to acidity?", "kind": "measurement", "id": "acid-content-basis-q02" } ] } ] }, { "id": "grade-and-contaminants", "name": "Grade and contaminants", "description": "Connects a declared grade to batch evidence and application-specific impurity limits.", "findings": [ { "id": "batch-suitability-evidence", "name": "Batch suitability evidence", "description": "Assess the certificate of analysis against a named specification, including relevant contaminants and analytical detection limits.", "questions": [ { "text": "Which specification defines the claimed grade, and which batch certificate demonstrates compliance?", "kind": "provenance", "id": "batch-suitability-evidence-q01" }, { "text": "Which limits for metals, fluoride, other anions or organic contamination must this batch meet for its intended use?", "kind": "action", "id": "batch-suitability-evidence-q02" } ] } ] } ] }, { "id": "physical-state-and-acid-behaviour", "name": "Physical state and acid behaviour", "description": "Relates observable material condition and chemical behaviour to composition and operating conditions.", "rationale": "A single melting point, boiling point or acidity value cannot characterise every phosphoric acid solution.", "layers": [ { "id": "phase-and-flow", "name": "Phase and flow", "description": "Assesses crystallisation, density, viscosity and thermal behaviour for the actual concentration.", "findings": [ { "id": "condition-specific-properties", "name": "Condition-specific properties", "description": "Attach composition, temperature and pressure to physical-property evidence and distinguish phase change from composition-changing thermal events.", "questions": [ { "text": "At the measured acid concentration and temperature, what phase, density and viscosity are expected?", "kind": "measurement", "id": "condition-specific-properties-q01" }, { "text": "Does a reported thermal transition describe melting, water loss, boiling or dehydration, and under what pressure and composition?", "kind": "boundary", "id": "condition-specific-properties-q02" } ] } ] }, { "id": "acidity-and-reaction-state", "name": "Acidity and reaction state", "description": "Tracks acidity and the extent to which dilution or neutralisation changes the material's interpretation.", "findings": [ { "id": "acidity-and-neutralisation", "name": "Acidity and neutralisation", "description": "Record pH and titration conditions separately from total phosphorus and nominal acid concentration.", "questions": [ { "text": "What measurement conditions and titration endpoint support the reported pH or acid-equivalent content?", "kind": "measurement", "id": "acidity-and-neutralisation-q01" }, { "text": "Has neutralisation introduced sufficient counterions to require describing the material as a phosphoric-acid/phosphate mixture?", "kind": "boundary", "id": "acidity-and-neutralisation-q02" } ] } ] } ] }, { "id": "handling-and-use-eligibility", "name": "Handling and use eligibility", "description": "Connects the material's concentration and grade to documented handling controls and permitted applications.", "rationale": "The phosphoric-acid name alone does not establish hazard classification, equipment compatibility or eligibility for food and other controlled uses.", "layers": [ { "id": "exposure-and-containment", "name": "Exposure and containment", "description": "Assesses the supplied material's hazards, possible mist exposure and storage or transfer compatibility.", "findings": [ { "id": "material-specific-controls", "name": "Material-specific controls", "description": "Use concentration-specific safety evidence and compatibility data covering the actual temperature, impurities and contact materials.", "questions": [ { "text": "Which current SDS and jurisdiction-specific exposure limits apply to this concentration and to acid mist generated by the proposed operation?", "kind": "provenance", "id": "material-specific-controls-q01" }, { "text": "What evidence supports the selected container, seals, transfer equipment and dilution procedure under the intended conditions?", "kind": "action", "id": "material-specific-controls-q02" } ] } ] }, { "id": "application-release", "name": "Application release", "description": "Determines whether a batch may enter an intended use and when uncertainty requires a hold.", "findings": [ { "id": "use-specific-acceptance", "name": "Use-specific acceptance", "description": "Tie acceptance to the relevant specification, jurisdiction and batch evidence rather than the supplier's grade label alone.", "questions": [ { "text": "Which composition, purity and regulatory requirements govern the intended food, laboratory, industrial or electronic application?", "kind": "action", "id": "use-specific-acceptance-q01" }, { "text": "Which missing records, failed limits or signs of contamination require testing, rejection or restricted use?", "kind": "action", "id": "use-specific-acceptance-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This is recall-based information; no sources were consulted.", "Verify current compendial editions, jurisdiction-specific classifications and exposure limits before regulatory use.", "Physical properties depend strongly on concentration and temperature; heating can cause dehydration to condensed acids, so a boiling-point value requires careful qualification." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of phosphoric acid 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": [ "Anhydrous orthophosphoric acid", "Aqueous phosphoric acid solutions", "Technical-grade phosphoric acid", "Food-grade phosphoric acid", "Pharmaceutical-grade phosphoric acid", "Reagent-grade phosphoric acid" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of phosphoric acid this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "CAS Registry Number", "value_or_pattern": "7664-38-2", "note": "Identifies phosphoric acid; does not specify concentration or grade." }, { "scheme": "PubChem CID", "value_or_pattern": "1004", "note": "Compound record for phosphoric acid." }, { "scheme": "EC number", "value_or_pattern": "231-633-2", "note": "European substance identifier." }, { "scheme": "Food additive INS / E number", "value_or_pattern": "INS 338 / E338", "note": "Food additive identity; does not establish permission for every food category or jurisdiction." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of phosphoric acid 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 States Pharmacopeia: Food Chemicals Codex specifications for phosphoric acid used as a food ingredient.", "United States Pharmacopeia-National Formulary: compendial requirements for pharmaceutical phosphoric acid.", "FAO/WHO Joint Expert Committee on Food Additives: identity and purity specifications for phosphoric acid.", "United Nations: Globally Harmonized System of Classification and Labelling of Chemicals; locally implemented classifications depend on the supplied material." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of phosphoric acid 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": [ "Manufacture of phosphate fertilizers and phosphate salts.", "Food and beverage acidulation using material meeting applicable food-grade requirements.", "Metal cleaning, rust removal and phosphate conversion treatment.", "Dental enamel and dentine etching in formulated products.", "Laboratory pH adjustment and preparation of phosphate buffer systems." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of phosphoric acid 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": "97.99", "unit": "g/mol" }, { "quantity": "Melting point of pure anhydrous acid", "typical_range": "Approximately 42.3", "unit": "°C" }, { "quantity": "Common concentrated commercial solution strength", "typical_range": "75-85", "unit": "% by mass H3PO4" }, { "quantity": "Density of an 85% by mass aqueous solution near 20 °C", "typical_range": "Approximately 1.69", "unit": "g/cm³" }, { "quantity": "Successive aqueous acid dissociation constants near 25 °C", "typical_range": "pKa1 ≈ 2.15; pKa2 ≈ 7.20; pKa3 ≈ 12.35", "unit": "dimensionless" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of phosphoric acid 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": [ "Concentrated material is corrosive and can cause severe skin burns and eye damage.", "Acid mist can injure or irritate the respiratory tract despite the acid's low volatility.", "Dilution and neutralization release heat and can cause splashing or localized overheating.", "Contact with susceptible metals can release flammable hydrogen gas.", "Unsuitable grades can introduce impurities into food, pharmaceutical or analytical applications." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of phosphoric acid 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": [ "Food additive identification commonly uses E338 in Europe and INS 338 in international additive nomenclature; permitted uses vary by jurisdiction.", "Occupational exposure limits and legally required hazard labels depend on jurisdiction and, for supplied solutions, concentration." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of phosphoric acid 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": "Phosphorous acid", "difference": "H3PO3 contains phosphorus in oxidation state +3 and is diprotic, whereas phosphoric acid contains phosphorus in oxidation state +5 and is triprotic." }, { "name": "Polyphosphoric acid", "difference": "Contains condensed phosphorus acids with P-O-P bonds; orthophosphoric acid has no P-O-P linkage." }, { "name": "Phosphate salts", "difference": "Contain phosphate-derived anions with counterions and are distinguished from the parent acid by their composition and degree of neutralization." }, { "name": "Phosphoric acid formulations", "difference": "Products such as dental etchants or rust removers contain phosphoric acid together with water and other ingredients; their properties are formulation-specific." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of phosphoric acid this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does the registry intend orthophosphoric acid alone, and does an existing world model already cover that identity?", "Which authoritative sources establish the identifier mappings and concentration-dependent physical properties, including the interpretation of reported boiling or decomposition temperatures?", "Which analytical criteria adequately distinguish orthophosphoric acid from condensed-acid mixtures in commercial materials?", "Which named grade standards and impurity limits should anchor the initial application profiles?", "Which jurisdictions and supplied concentrations must be covered first for GHS classification, exposure limits, transport requirements and use eligibility?" ], "statistics": { "bundles": 5, "layers": 9, "findings": 17, "questions": 25 } }, "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 phosphoric acid, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to recognise phosphoric acid, assess a particular material's composition and condition, and determine whether its documented grade and handling controls support an intended use.", "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: phosphate ion p-32, trioxido(oxo)-, (¹⁷O₄)Phosphoric acid.", "3 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 73 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 phosphoric acid, 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": [ "phosphate ion p-32", "trioxido(oxo)-", "(¹⁷O₄)Phosphoric acid" ] } ], "standing": "Described in 73 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 3 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 phosphoric acid from another, and a phosphoric acid 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 phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a phosphoric acid 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 phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a phosphoric acid performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a phosphoric acid at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 phosphoric acid is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a phosphoric acid, 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 phosphoric acid, 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 phosphoric acid 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 } } } }