{ "model": { "rank": 2843, "code": "thing-q83320", "model_id": "vr.tr.nitric-acid", "name": "nitric acid", "purpose": "Enable an agent to identify nitric acid, assess the condition and suitability of a particular material, and determine which handling or use decisions require further 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/q83320/", "tier": 2, "score": 96, "payload": { "layer": "wikidata", "aliases": [ "Nitric-15N acid solution", "(¹⁵N,¹⁸O₃)Nitric acid" ], "aliasCount": 2, "merged": 2, "knownIn": 96, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.nitric-acid", "source": { "dataset": "wikidata", "item": "Q83320", "url": "https://www.wikidata.org/wiki/Q83320", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T11:51:23Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 37, "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: 01a07bb4-3fe0-7bc1-957c-ffbb85d97361\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: nitric acid\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 711 things:\n# Batch 003: 1001 regi", "usd": 0, "recall": true }, "codex": { "seconds": 78.7, "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: 01a07bb4-3ff0-7791-9498-19dca9ee8933\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: nitric acid\nRegistry id: vr.tr.nitric-acid\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\n" } } }, "metaModel": { "id": "THING-Q83320", "registryId": "vr.tr.nitric-acid", "name": "nitric acid", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q83320/", "model": { "registry_id": "vr.tr.nitric-acid", "name": "nitric acid", "purpose": "Enable an agent to identify nitric acid, assess the condition and suitability of a particular material, and determine which handling or use decisions require further evidence.", "definition": "Nitric acid (HNO₃) is a nitrogen oxoacid that is strongly acidic in aqueous solution and acts as a corrosive oxidizing reagent, with behavior dependent on concentration, temperature and dissolved nitrogen oxides.", "scope_statement": "This model owns nitric acid under registry entry vr.tr.nitric-acid in PHY / PHY.MAT, including its chemical identity and the concentration, grade, dissolved nitrogen oxides, condition and hazard context needed to distinguish actual samples and solutions.", "in_scope": [ "Nitric acid identity and distinctions from nitrous acid, nitrate salts and mixed-acid formulations", "Anhydrous and aqueous forms, with explicit concentration bases and dissolved nitrogen oxide content", "Purity, commercial grade, trace contaminants and evidence of fitness for an intended use", "Physical properties and material condition at stated temperature, pressure and composition", "Composition-dependent hazards, compatibility and jurisdiction-specific identity records" ], "out_of_scope": [ "Industrial processes and equipment that manufacture nitric acid", "Finished products and mixed-acid formulations containing nitric acid", "Nitrate salts and nitrous acid as independently registered substances", "Facility ventilation, storage installations and transport equipment", "Medical diagnosis and treatment following exposure", "Detailed procedures for chemical synthesis or reactive processing" ], "distinguishing_features": [ "The chemical identity is HNO3; HNO2 identifies nitrous acid, while a nitrate salt requires a counterion and is not itself nitric acid.", "Low pH alone cannot identify nitric acid; identification must distinguish it from other acids and establish the relevant chemical composition.", "A nitric acid solution requires a stated HNO3 concentration and reporting basis; the name alone does not distinguish dilute solution, concentrated solution and anhydrous material.", "Fuming designations require composition evidence, including dissolved nitrogen oxides where relevant; visible fumes or colour alone do not establish a grade.", "A formulation containing another deliberately added acid belongs to a mixture model, with nitric acid represented as a constituent." ], "characteristics": [ { "name": "Chemical and registry identity", "kind": "category", "unit_or_values": "HNO3; vr.tr.nitric-acid; source-verified CAS, PubChem and EC identifiers", "why_it_matters": "Connects material records to the correct substance and prevents confusion with related nitrogen compounds." }, { "name": "HNO3 concentration", "kind": "measurement", "unit_or_values": "Mass fraction or mass percent preferred; other bases explicitly named, with temperature where relevant", "why_it_matters": "Concentration affects physical properties, suitability, compatibility and hazard interpretation." }, { "name": "Water content", "kind": "measurement", "unit_or_values": "Mass percent, with analytical method and uncertainty", "why_it_matters": "Distinguishes aqueous and nominally anhydrous material and helps check composition claims." }, { "name": "Dissolved nitrogen oxide content", "kind": "measurement", "unit_or_values": "Reported species or analytical equivalent, concentration basis and method", "why_it_matters": "Helps interpret fuming grade, colour, composition changes and headspace concerns." }, { "name": "Grade and impurity specification", "kind": "category", "unit_or_values": "Supplier grade, governing specification and batch certificate; impurity limits in mg/kg or µg/kg", "why_it_matters": "A high acid assay does not by itself establish suitability for contamination-sensitive work." }, { "name": "Physical state and appearance", "kind": "state", "unit_or_values": "Phase, colour, clarity, visible solids and observed fuming, with observation conditions", "why_it_matters": "Supports condition assessment without treating appearance as definitive identification." }, { "name": "Temperature and pressure", "kind": "measurement", "unit_or_values": "°C or K; kPa absolute", "why_it_matters": "Makes phase, density and volatility observations interpretable." }, { "name": "Density and phase-transition properties", "kind": "measurement", "unit_or_values": "Density in kg/m³; melting or freezing and boiling temperatures in °C, each tied to composition and applicable conditions", "why_it_matters": "Prevents pure-substance constants from being applied indiscriminately to aqueous solutions." }, { "name": "Hazard and exposure-limit applicability", "kind": "relation", "unit_or_values": "Material linked to dated classification and exposure-limit sources, jurisdiction, concentration range and averaging period", "why_it_matters": "Allows an agent to distinguish applicable requirements from generic substance-level statements." }, { "name": "Contact-material compatibility", "kind": "relation", "unit_or_values": "Material pair, concentration, temperature, exposure duration and supporting compatibility evidence", "why_it_matters": "Compatibility cannot be inferred reliably from a generic acid-resistant designation." } ], "affordances": [ "Match a label, safety data sheet and batch certificate to the nitric acid identity and actual material composition.", "Compare concentration and impurity evidence against the requirements of a declared use.", "Select physical-property references that match the sample's composition and conditions.", "Flag unexplained changes in appearance or composition for qualified assessment.", "Check proposed containment and contact materials against documented compatibility conditions.", "Identify missing hazard, exposure or jurisdictional evidence before authorizing a proposed activity." ] }, "sources": [], "structure": { "bundles": [ { "id": "nitric-acid-identity", "name": "Nitric acid identity and boundaries", "description": "Establishes which chemical entity is represented and where nitric acid records end and neighbouring substance or formulation records begin.", "rationale": "Acidity, nitrate content and commercial names can each produce false matches without a chemical identity boundary.", "layers": [ { "id": "chemical-identity", "name": "Chemical identity", "description": "Connects the registry entry to independently supported substance identifiers.", "findings": [ { "id": "hno3-identity-evidence", "name": "HNO3 identity evidence", "description": "Record the basis for identifying the material as nitric acid and the authority behind each external identifier.", "questions": [ { "text": "Which evidence establishes nitric acid identity rather than merely low pH or the presence of nitrate?", "kind": "definition", "id": "hno3-identity-evidence-q01" }, { "text": "Which authoritative records establish the CAS number, PubChem CID and EC number, and what entity does each record cover?", "kind": "provenance", "id": "hno3-identity-evidence-q02" } ] } ] }, { "id": "substance-mixture-boundary", "name": "Substance and mixture boundary", "description": "Distinguishes forms of nitric acid from related compounds and separately modelled formulations.", "findings": [ { "id": "solution-versus-formulation", "name": "Solution versus formulation", "description": "Represent aqueous concentration as a material attribute while linking separately named formulations to their own models.", "questions": [ { "text": "Is this material nitric acid, an aqueous nitric acid solution or a formulation containing additional intentional constituents?", "kind": "boundary", "id": "solution-versus-formulation-q01" }, { "text": "Which constituents are impurities, grade-defining additions or ingredients that require a separate formulation record?", "kind": "boundary", "id": "solution-versus-formulation-q02" } ] } ] } ] }, { "id": "composition-and-grade", "name": "Composition and grade", "description": "Describes the acid, water, nitrogen oxide and impurity composition that gives a nitric acid sample its practical identity.", "rationale": "The substance name does not specify concentration, fuming designation or analytical suitability.", "layers": [ { "id": "acid-water-nitrogen-oxides", "name": "Acid, water and nitrogen oxides", "description": "Makes concentration claims and nitrogen oxide reporting comparable.", "findings": [ { "id": "composition-basis", "name": "Composition basis", "description": "Record HNO3 assay, water and dissolved nitrogen oxides with methods and reporting bases.", "questions": [ { "text": "What are the measured HNO3 and water contents, and are the results expressed on compatible bases?", "kind": "measurement", "id": "composition-basis-q01" }, { "text": "How is dissolved nitrogen oxide content measured and reported, and could it affect the interpretation of the acid assay?", "kind": "measurement", "id": "composition-basis-q02" } ] } ] }, { "id": "grade-and-contaminants", "name": "Grade and contaminants", "description": "Links commercial grade claims to measurable acceptance criteria.", "findings": [ { "id": "grade-evidence", "name": "Grade evidence", "description": "Treat grade names as claims requiring specifications and batch evidence.", "questions": [ { "text": "Which specification defines this supplier's concentrated, fuming, reagent or trace-analysis grade?", "kind": "provenance", "id": "grade-evidence-q01" }, { "text": "Which impurity limits and batch results determine whether this material is suitable for its declared use?", "kind": "action", "id": "grade-evidence-q02" } ] } ] } ] }, { "id": "physical-state-and-condition", "name": "Physical state and condition", "description": "Relates observable condition and physical-property data to nitric acid composition and environment.", "rationale": "Aqueous composition and nitrogen oxide content make unqualified constants and appearance-based conclusions unreliable.", "layers": [ { "id": "conditioned-physical-properties", "name": "Conditioned physical properties", "description": "Records properties together with the conditions under which they apply.", "findings": [ { "id": "property-applicability", "name": "Property applicability", "description": "Require composition and environmental context for density, phase transitions and volatility data.", "questions": [ { "text": "Which density, freezing and boiling data apply to this HNO3 concentration at the stated temperature or pressure?", "kind": "measurement", "id": "property-applicability-q01" }, { "text": "Does the reference describe pure HNO3, an aqueous mixture or azeotropic behaviour, and which interpretation fits this sample?", "kind": "boundary", "id": "property-applicability-q02" } ] } ] }, { "id": "condition-over-time", "name": "Condition over time", "description": "Tracks changes without assigning a cause solely from visual observations.", "findings": [ { "id": "appearance-and-composition-change", "name": "Appearance and composition change", "description": "Connect colour, clarity and fuming observations to storage history and analytical evidence.", "questions": [ { "text": "How have colour, clarity, fuming observations and measured composition changed since the material was received?", "kind": "measurement", "id": "appearance-and-composition-change-q01" }, { "text": "What evidence distinguishes expected grade appearance from decomposition, contamination or a change in concentration?", "kind": "provenance", "id": "appearance-and-composition-change-q02" } ] } ] } ] }, { "id": "hazards-and-compatibility", "name": "Hazards and compatibility", "description": "Supports assessment of corrosive and oxidizing behaviour, airborne exposure and material contact.", "rationale": "Nitric acid decisions require more than a generic acid label, particularly where concentration and contact materials change the assessment.", "layers": [ { "id": "hazard-and-exposure-evidence", "name": "Hazard and exposure evidence", "description": "Links the actual material to applicable hazard classifications and airborne exposure criteria.", "findings": [ { "id": "composition-specific-hazards", "name": "Composition-specific hazards", "description": "Record classification and exposure evidence with its concentration range, jurisdiction and date.", "questions": [ { "text": "Which corrosivity, oxidizing and other hazard classifications apply to this composition under the relevant jurisdiction?", "kind": "provenance", "id": "composition-specific-hazards-q01" }, { "text": "Which exposure limits apply to nitric acid vapour or mist, and must nitrogen dioxide be assessed separately for this material or activity?", "kind": "boundary", "id": "composition-specific-hazards-q02" } ] } ] }, { "id": "contact-and-containment", "name": "Contact and containment", "description": "Evaluates specific contact materials and incompatible substances using condition-matched evidence.", "findings": [ { "id": "compatibility-evidence", "name": "Compatibility evidence", "description": "Require documented compatibility for the proposed concentration, temperature and exposure duration.", "questions": [ { "text": "What evidence supports compatibility of the proposed vessel, closure, seal and transfer-contact materials with this nitric acid composition?", "kind": "provenance", "id": "compatibility-evidence-q01" }, { "text": "Which potential contacts with organics, reducing agents, bases or metals require segregation or specialist review under the applicable guidance?", "kind": "action", "id": "compatibility-evidence-q02" } ] } ] } ] }, { "id": "traceability-and-use-decisions", "name": "Traceability and use decisions", "description": "Connects a nitric acid material record to batch evidence, jurisdictional records and a declared intended use.", "rationale": "Substance identity alone cannot establish whether a particular batch meets a use specification or applicable requirements.", "layers": [ { "id": "batch-and-document-traceability", "name": "Batch and document traceability", "description": "Keeps supplier claims and regulatory records attached to the material they actually describe.", "findings": [ { "id": "document-material-match", "name": "Document-to-material match", "description": "Check agreement among the container label, supplier product record, safety data sheet and certificate of analysis.", "questions": [ { "text": "Do the label, product identifier, batch number, concentration and grade agree across the available documents?", "kind": "provenance", "id": "document-material-match-q01" }, { "text": "Which dated transport or jurisdictional records apply to this concentration and formulation rather than to nitric acid generically?", "kind": "boundary", "id": "document-material-match-q02" } ] } ] }, { "id": "fitness-for-declared-use", "name": "Fitness for declared use", "description": "Turns composition, condition and compatibility evidence into a bounded suitability decision.", "findings": [ { "id": "use-acceptance-evidence", "name": "Use acceptance evidence", "description": "Compare the material with explicit requirements and preserve unresolved evidence gaps.", "questions": [ { "text": "What concentration, impurity, condition and compatibility requirements must this batch satisfy for the declared use?", "kind": "action", "id": "use-acceptance-evidence-q01" }, { "text": "Which missing, conflicting or outdated evidence prevents a suitability decision and requires qualified review?", "kind": "action", "id": "use-acceptance-evidence-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 a recall-based description; no sources were consulted.", "Physical properties require confirmation against acid concentration, water content, dissolved nitrogen oxides, temperature and pressure.", "Verify current regulatory classifications, exposure limits, transport provisions and grade specifications for the actual formulation and jurisdiction." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of nitric 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 nitric acid", "Dilute aqueous nitric acid", "Concentrated aqueous nitric acid, commonly about 68-70% by mass", "White fuming nitric acid", "Red fuming nitric acid", "High-purity analytical or electronic-grade nitric acid" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of nitric 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": "Chemical formula", "value_or_pattern": "HNO3", "note": "Identifies nitric acid; commercial solutions also contain water and may contain dissolved nitrogen oxides." }, { "scheme": "CAS Registry Number", "value_or_pattern": "7697-37-2", "note": "Substance identifier for nitric acid." }, { "scheme": "PubChem CID", "value_or_pattern": "944", "note": "Compound identifier for nitric acid." }, { "scheme": "EC number", "value_or_pattern": "231-714-2", "note": "European chemical inventory identifier." }, { "scheme": "UN dangerous goods number", "value_or_pattern": "UN 2031; UN 2032", "note": "UN 2031 covers nitric acid other than red fuming; UN 2032 identifies red fuming nitric acid. Transport requirements depend on formulation and concentration." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of nitric 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 Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS): framework for communicating corrosive and oxidizing hazards; implemented through jurisdiction-specific rules.", "European Union REACH Regulation: chemical registration, supply-chain information and related obligations.", "European Union CLP Regulation: classification, labelling and packaging of substances and mixtures.", "United States OSHA Hazard Communication Standard: workplace hazard classification, labels and safety data sheets.", "United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations: transport classification framework." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of nitric 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 ammonium nitrate and other nitrate fertilizers.", "Industrial nitration in the manufacture of chemical intermediates and energetic materials.", "Metal pickling, etching and stainless-steel passivation under controlled conditions.", "Laboratory sample digestion and preparation for elemental analysis.", "Oxidizer in some rocket-propellant systems, particularly fuming formulations." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of nitric 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": "63.01", "unit": "g/mol" }, { "quantity": "Melting point of pure nitric acid", "typical_range": "approximately -42", "unit": "°C" }, { "quantity": "Boiling point of pure nitric acid at approximately 1 atm", "typical_range": "approximately 83, with decomposition possible", "unit": "°C" }, { "quantity": "Density of nearly anhydrous nitric acid at approximately 20 °C", "typical_range": "approximately 1.51", "unit": "g/cm³" }, { "quantity": "Nitric acid mass fraction in the atmospheric-pressure water azeotrope", "typical_range": "approximately 68", "unit": "% by mass" }, { "quantity": "Boiling point of the water azeotrope at approximately 1 atm", "typical_range": "approximately 120.5", "unit": "°C" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of nitric 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": [ "Causes severe chemical burns and serious eye damage; acid mist and fumes can injure the respiratory tract.", "Oxidizing action can intensify fires and cause violent reactions with organic materials, reducing agents and other incompatible substances.", "Reactions with many metals release toxic nitrogen oxides; nitric acid does not follow the simple acid-metal hydrogen-release pattern in all conditions.", "Mixing with water releases substantial heat and can cause localized boiling and corrosive splashing.", "Heat or light can promote decomposition and nitrogen dioxide formation, causing discoloration and potentially pressure buildup in unsuitable containment." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of nitric 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": [ "GHS implementation, required label elements and concentration-dependent mixture classifications vary by jurisdiction.", "Occupational exposure limits and their averaging periods differ among authorities.", "Precursor controls, purchasing restrictions and reporting obligations depend on jurisdiction and concentration." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of nitric 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": "Nitrous acid", "difference": "HNO2 contains nitrogen in oxidation state +3; nitric acid contains nitrogen in oxidation state +5." }, { "name": "Nitrate", "difference": "NO3− is nitric acid's conjugate-base ion; nitrate salts are distinct substances with their own cations and properties." }, { "name": "Nitrogen dioxide", "difference": "NO2 is a nitrogen oxide that may dissolve in nitric acid and contribute to red fumes; it is not the acid itself." }, { "name": "Aqua regia", "difference": "Aqua regia is a reactive mixture of nitric and hydrochloric acids, rather than a grade of nitric acid alone." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of nitric acid this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative identity records should anchor the CAS, PubChem and EC identifiers and their treatment of aqueous forms?", "How do relevant suppliers or standards define concentrated, white fuming and red fuming nitric acid, including dissolved nitrogen oxide limits?", "Which evaluated property sources cover the required concentration range, including freezing behaviour, boiling behaviour and azeotropic composition?", "Which current jurisdiction-specific classifications, exposure limits and transport distinctions apply across the concentrations to be represented?", "Which analytical methods and compatibility references are sufficiently specific to support grade acceptance and condition assessment for the intended uses?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 19, "questions": 29 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "chemical substance or material", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a nitric acid, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to identify nitric acid, assess the condition and suitability of a particular material, and determine which handling or use decisions require further evidence.", "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: Nitric-15N acid solution, (¹⁵N,¹⁸O₃)Nitric acid.", "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 96 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 nitric 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": [ "Nitric-15N acid solution", "(¹⁵N,¹⁸O₃)Nitric acid" ] } ], "standing": "Described in 96 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one nitric acid from another, and a nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric acid from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric acid is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a nitric 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 nitric 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 nitric 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 nitric acid is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a nitric 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 nitric 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 nitric 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 nitric 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 nitric acid is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric acid between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a nitric 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 nitric 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 nitric 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 nitric acid, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric acid is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a nitric acid performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a nitric 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 nitric 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 nitric 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 nitric acid.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a nitric acid at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a nitric 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 nitric 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 nitric 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 nitric acid there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric 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 nitric acid and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a nitric 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 nitric 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 nitric 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 nitric acid is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a nitric 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 nitric 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 nitric 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 } } } }