{ "model": { "rank": 6200, "code": "thing-q184373", "model_id": "vr.tr.sodium-nitrate", "name": "sodium nitrate", "purpose": "Enable an AI agent to identify sodium nitrate, assess the condition and suitability of a particular lot, and determine which uses or handling actions its evidence supports.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q184373/", "tier": 2, "score": 62, "payload": { "layer": "wikidata", "aliases": [ "Sodium nitrate-15N" ], "aliasCount": 1, "merged": 1, "knownIn": 62, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q184373", "url": "https://www.wikidata.org/wiki/Q184373", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T22:53:26Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 24.9, "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: 01a0885f-6875-7542-af18-3853be0195ab\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: sodium nitrate\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 188 things:\n# Batch 006: 1001 r", "usd": 0, "recall": true }, "codex": { "seconds": 58.2, "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: 01a0885f-686a-70e1-b34d-a1792eca893e\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: sodium nitrate\nRegistry id: vr.tr.sodium-nitrate\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (no" } } }, "metaModel": { "id": "THING-Q184373", "registryId": "vr.tr.sodium-nitrate", "name": "sodium nitrate", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q184373/", "model": { "registry_id": "vr.tr.sodium-nitrate", "name": "sodium nitrate", "purpose": "Enable an AI agent to identify sodium nitrate, assess the condition and suitability of a particular lot, and determine which uses or handling actions its evidence supports.", "definition": "Sodium nitrate is the inorganic ionic compound NaNO3, composed of sodium cations and nitrate anions, ordinarily occurring as a white, water-soluble crystalline solid with oxidizing properties.", "scope_statement": "This model owns sodium nitrate (NaNO3) as a chemical substance and the composition, grade, physical state, provenance, and use constraints of identified samples or lots linked to registry entry vr.tr.sodium-nitrate in PHY.MAT.", "in_scope": [ "Chemical identity as the sodium salt of nitrate, including identifiers and distinctions from sodium nitrite and other nitrate salts", "Lot composition, assay basis, water content, impurities, and documented grade", "Solid material and aqueous sodium nitrate, with concentration and conditions stated explicitly", "Condition-dependent physical properties and thermal behavior", "Evidence governing oxidizer handling, compatibility, storage, and suitability for a declared use" ], "out_of_scope": [ "Finished fertilizers, foods, heat-transfer mixtures, or other products containing sodium nitrate", "Manufacturing plants and detailed sodium nitrate production processes", "Complete models of sodium nitrite, potassium nitrate, nitric acid, or other neighbouring substances", "Food recipes, fertilizer application programs, and process operating procedures", "Deposit geology and environmental nitrogen cycling beyond links needed to explain provenance or release" ], "distinguishing_features": [ "Identity evidence must establish sodium cations and nitrate anions in the composition represented by NaNO3; detection of nitrate alone cannot distinguish sodium nitrate from other nitrate salts.", "An anion-specific analytical result must distinguish nitrate from nitrite; sodium nitrite is a different substance, and any nitrite present must be recorded separately.", "Cation analysis must distinguish sodium nitrate from potassium nitrate and mixed nitrate salts, even when appearance or intended use is similar.", "A clear solution or white crystalline appearance is insufficient identification; a sample needs traceable identity evidence and composition appropriate to its physical form.", "A product containing sodium nitrate is represented as a mixture or formulated product linked to this substance, rather than automatically treated as a pure sodium nitrate lot." ], "characteristics": [ { "name": "Chemical identity", "kind": "category", "unit_or_values": "NaNO3; sodium cation and nitrate anion in a 1:1 formula-unit ratio", "why_it_matters": "Defines the substance independently of trade name, source, or intended use." }, { "name": "Authoritative identifier mapping", "kind": "relation", "unit_or_values": "Links to verified CAS, PubChem, EC, and applicable jurisdictional substance records", "why_it_matters": "Connects supplier and regulatory records without relying on ambiguous names." }, { "name": "Sodium nitrate assay", "kind": "measurement", "unit_or_values": "Mass percent, with analytical method and as-received or dry basis", "why_it_matters": "Supports comparisons between lots and prevents water content from silently changing the meaning of purity." }, { "name": "Water content", "kind": "measurement", "unit_or_values": "Mass percent, with method and sampling conditions", "why_it_matters": "Affects assay interpretation, delivered substance quantity, and solid handling." }, { "name": "Impurity profile", "kind": "measurement", "unit_or_values": "mg/kg or mass percent by analyte, including nitrite, other salts, and use-relevant contaminants", "why_it_matters": "Distinguishes identity confirmation from fitness for a particular application." }, { "name": "Physical form", "kind": "state", "unit_or_values": "Crystalline solid, powder, granules, aqueous solution, or molten material; temperature and composition required", "why_it_matters": "Determines which handling, concentration, and property evidence applies." }, { "name": "Aqueous concentration", "kind": "measurement", "unit_or_values": "Mass percent, mol/kg solvent, or mol/L solution; temperature required where relevant", "why_it_matters": "Prevents dilute solutions from being treated as neat substance and supports material accounting." }, { "name": "Grade and conformity evidence", "kind": "relation", "unit_or_values": "Declared grade linked to a named specification, revision, certificate, and lot", "why_it_matters": "A supplier grade label alone does not establish compliance with an intended-use requirement." }, { "name": "Thermal and solubility properties", "kind": "measurement", "unit_or_values": "Melting or decomposition observations in °C; solubility with explicit units, solvent, temperature, and method", "why_it_matters": "Supports phase assessment while avoiding unsupported boiling-point or thermal-stability assumptions." }, { "name": "Applicable hazard classification", "kind": "category", "unit_or_values": "Verified classes, categories, and statements with jurisdiction, source date, and material composition", "why_it_matters": "Connects handling decisions to the actual lot or solution and the applicable classification system." } ], "affordances": [ "Resolve an identity claim against analytical evidence and authoritative substance records.", "Compare a lot's assay, moisture, and impurities with the specification for a declared use.", "Calculate sodium nitrate quantity from documented lot mass, assay basis, or solution concentration.", "Assess whether observed phase, caking, or contamination requires resampling or restricted use.", "Select applicable handling and storage instructions from current evidence for the material's form and composition.", "Link sodium nitrate used in a formulated product to that product's model without transferring purity or approval claims." ] }, "sources": [], "structure": { "bundles": [ { "id": "sodium-nitrate-identity", "name": "Sodium nitrate identity", "description": "Establishes that the subject is NaNO3 and preserves the boundary between the substance, neighbouring salts, and mixtures.", "rationale": "Nitrate detection, sodium detection, and a familiar trade name each provide incomplete identity evidence.", "layers": [ { "id": "ionic-identity", "name": "Ionic identity", "description": "Records evidence for the sodium and nitrate components of the claimed substance.", "findings": [ { "id": "sodium-and-nitrate-confirmation", "name": "Sodium and nitrate confirmation", "description": "An identity assessment must address both ions and distinguish nitrate from nitrite.", "questions": [ { "text": "What evidence establishes that the material is sodium nitrate with formula NaNO3?", "kind": "definition", "id": "sodium-and-nitrate-confirmation-q01" }, { "text": "Which analytical methods distinguish nitrate from nitrite and sodium from other cations in this sample?", "kind": "measurement", "id": "sodium-and-nitrate-confirmation-q02" } ] } ] }, { "id": "registry-and-mixture-boundaries", "name": "Registry and mixture boundaries", "description": "Connects verified external identities to the registry entry and separates substance records from product records.", "findings": [ { "id": "identifier-and-product-resolution", "name": "Identifier and product resolution", "description": "Identifier mappings must refer to sodium nitrate, while solutions and formulated products retain their additional composition information.", "questions": [ { "text": "Which read and verified CAS, PubChem, and EC records identify the substance represented by vr.tr.sodium-nitrate?", "kind": "provenance", "id": "identifier-and-product-resolution-q01" }, { "text": "Is the subject a sodium nitrate lot, an aqueous preparation, or a formulated product requiring a separate linked model?", "kind": "boundary", "id": "identifier-and-product-resolution-q02" } ] } ] } ] }, { "id": "lot-composition-and-grade", "name": "Lot composition and grade", "description": "Captures how much sodium nitrate is present, what accompanies it, and which specification the lot demonstrably meets.", "rationale": "Chemical identity alone cannot establish suitability for food, agricultural, laboratory, or industrial use.", "layers": [ { "id": "assay-water-and-impurities", "name": "Assay, water, and impurities", "description": "Makes composition measurements comparable by preserving their basis, method, and sampling context.", "findings": [ { "id": "interpretable-composition", "name": "Interpretable composition", "description": "Assay, water content, and impurity results must be read together, with nitrite reported separately from nitrate.", "questions": [ { "text": "What is the sodium nitrate assay, and is it reported on a dry or as-received basis?", "kind": "measurement", "id": "interpretable-composition-q01" }, { "text": "What are the measured water and impurity contents, including nitrite, and what reporting limits apply?", "kind": "measurement", "id": "interpretable-composition-q02" } ] } ] }, { "id": "grade-and-lot-traceability", "name": "Grade and lot traceability", "description": "Relates a claimed grade to the actual batch and the requirements of a declared application.", "findings": [ { "id": "documented-grade-conformity", "name": "Documented grade conformity", "description": "Grade conformity requires a named specification and evidence traceable to the lot under assessment.", "questions": [ { "text": "Which supplier, lot number, certificate, and specification revision support the declared grade?", "kind": "provenance", "id": "documented-grade-conformity-q01" }, { "text": "Do the available results establish conformity for the proposed use, or must the lot remain unqualified pending additional evidence?", "kind": "action", "id": "documented-grade-conformity-q02" } ] } ] } ] }, { "id": "phase-and-physical-condition", "name": "Phase and physical condition", "description": "Relates solid, dissolved, and heated sodium nitrate to measured conditions and observed material state.", "rationale": "The same substance identity can describe materials with substantially different concentration, flow, and thermal behavior.", "layers": [ { "id": "solid-and-aqueous-state", "name": "Solid and aqueous state", "description": "Records physical form, moisture-related changes, and the concentration basis of solutions.", "findings": [ { "id": "form-and-concentration-assessment", "name": "Form and concentration assessment", "description": "State assessment distinguishes dry solids, damp or caked solids, solutions, and preparations containing undissolved material.", "questions": [ { "text": "What physical form, temperature, water content, and evidence of caking or undissolved solids characterize the material?", "kind": "measurement", "id": "form-and-concentration-assessment-q01" }, { "text": "For an aqueous preparation, what concentration basis and temperature support comparison with a verified sodium nitrate solubility source?", "kind": "measurement", "id": "form-and-concentration-assessment-q02" } ] } ] }, { "id": "thermal-property-evidence", "name": "Thermal property evidence", "description": "Separates melting observations from decomposition and records the conditions under which each was established.", "findings": [ { "id": "melting-and-decomposition-boundary", "name": "Melting and decomposition boundary", "description": "Thermal records must identify the observed event rather than treating all high-temperature changes as boiling or reversible phase transitions.", "questions": [ { "text": "Which sources establish melting and decomposition behavior, with pressure, atmosphere, purity, and method recorded where available?", "kind": "provenance", "id": "melting-and-decomposition-boundary-q01" }, { "text": "Does the material's thermal history require reassessment of composition or suitability before further use?", "kind": "action", "id": "melting-and-decomposition-boundary-q02" } ] } ] } ] }, { "id": "handling-and-use-constraints", "name": "Handling and use constraints", "description": "Connects sodium nitrate's oxidizer-related concerns, exposure evidence, and application requirements to concrete decisions.", "rationale": "A recognized substance and a satisfactory assay still leave handling compatibility and use eligibility unresolved.", "layers": [ { "id": "classification-and-compatibility", "name": "Classification and compatibility", "description": "Records applicable hazard evidence and evaluates contact with other materials under the proposed conditions.", "findings": [ { "id": "oxidizer-handling-evidence", "name": "Oxidizer handling evidence", "description": "Handling decisions require verified classification and compatibility guidance applicable to the actual solid or solution.", "questions": [ { "text": "Which current safety data and jurisdictional records establish the hazard classification for this form and composition of sodium nitrate?", "kind": "provenance", "id": "oxidizer-handling-evidence-q01" }, { "text": "What segregation, contamination control, and handling instructions apply to the proposed contact with combustible or reducing materials?", "kind": "action", "id": "oxidizer-handling-evidence-q02" } ] } ] }, { "id": "exposure-and-use-eligibility", "name": "Exposure and use eligibility", "description": "Links the proposed application and exposure pathways to the evidence needed for a permitted action.", "findings": [ { "id": "application-specific-decision", "name": "Application-specific decision", "description": "Use eligibility and exposure controls must be assessed for a stated jurisdiction, application, and material form.", "questions": [ { "text": "Which sodium-nitrate-specific or applicable particulate exposure limits and controls are documented for the anticipated exposure pathway?", "kind": "provenance", "id": "application-specific-decision-q01" }, { "text": "Which current application rules and lot qualifications must be satisfied before this sodium nitrate can be used as proposed?", "kind": "action", "id": "application-specific-decision-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 recalled knowledge, with no sources consulted; verify identifiers and numerical properties before publication.", "Check current jurisdiction-specific hazard classifications, food permissions, purity specifications, and occupational exposure requirements.", "Grade names do not establish a universal purity: verify assay, moisture, and impurity limits against the applicable specification." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of sodium nitrate 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": [ "Technical-grade sodium nitrate", "Fertilizer-grade sodium nitrate", "Food-grade sodium nitrate", "Reagent-grade sodium nitrate" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of sodium nitrate 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": "7631-99-4", "note": "Identifies sodium nitrate." }, { "scheme": "EC number", "value_or_pattern": "231-554-3", "note": "European chemical inventory identifier." }, { "scheme": "PubChem CID", "value_or_pattern": "24268", "note": "Compound record identifier." }, { "scheme": "EU food additive E number", "value_or_pattern": "E251", "note": "Food additive identity; does not imply unrestricted permission to use." }, { "scheme": "UN dangerous goods number", "value_or_pattern": "UN 1498", "note": "Transport identity for sodium nitrate, assigned to Class 5.1 oxidizing substances." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of sodium nitrate 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 Recommendations on the Transport of Dangerous Goods classify sodium nitrate for transport as an oxidizing substance.", "European Parliament and Council Regulation (EC) No 1333/2008 governs authorized food additive uses of sodium nitrate (E251) in the European Union.", "European Commission Regulation (EU) No 231/2012 specifies purity requirements for authorized food additives, including E251.", "The FAO/WHO Joint Expert Committee on Food Additives (JECFA) publishes food additive specifications for sodium nitrate." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of sodium nitrate 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": [ "Nitrogen fertilizer supplying nitrate nitrogen.", "Preservative in certain cured foods under applicable use restrictions.", "Oxidizing ingredient in glass manufacture.", "Component of molten nitrate salt mixtures used for heat transfer and thermal energy storage.", "Oxidizing ingredient in some pyrotechnic formulations." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of sodium nitrate 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": "84.99", "unit": "g/mol" }, { "quantity": "Melting point", "typical_range": "Approximately 308", "unit": "°C" }, { "quantity": "Solid density near room temperature", "typical_range": "Approximately 2.26", "unit": "g/cm³" }, { "quantity": "Solubility in water at 20 °C", "typical_range": "Approximately 88", "unit": "g per 100 g water" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of sodium nitrate 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": [ "Oxidizing action can intensify combustion of other materials.", "Contact or contamination with combustible substances or reducing agents can create hazardous reactive mixtures.", "Strong heating causes decomposition, including oxygen release and formation of sodium nitrite; a normal boiling point is therefore not a useful routine property.", "Dust can irritate eyes and respiratory passages.", "Excessive ingestion can cause toxicity, including methemoglobinemia following conversion of nitrate to nitrite." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of sodium nitrate 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": [ "Permitted food categories, maximum use levels, and labeling requirements vary by jurisdiction.", "The historical name Chile saltpeter reflects natural nitrate deposits associated with Chile; it does not establish the origin or purity of a commercial sample." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of sodium nitrate 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": "Sodium nitrite", "difference": "Has formula NaNO2 and contains nitrite rather than nitrate; its chemical behavior, toxicity, and permitted food uses differ." }, { "name": "Potassium nitrate", "difference": "Has potassium rather than sodium as the cation, giving formula KNO3." }, { "name": "Ammonium nitrate", "difference": "Contains ammonium rather than sodium and has substantially different thermal and explosive hazards." }, { "name": "Nitratine", "difference": "Names the naturally occurring mineral form of sodium nitrate; sodium nitrate also includes manufactured material." }, { "name": "Nitrate fertilizer", "difference": "Names a product category that may contain sodium nitrate, other nitrate salts, or mixtures." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of sodium nitrate this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative identifier records should anchor this entry, and do their substance boundaries agree with the supplier records being used?", "What reference values and experimental conditions should be adopted for solubility, melting, and decomposition, and how should conflicting reports be represented?", "Which impurity limits and analytical methods distinguish the grades relevant to the intended applications, particularly for nitrite and trace contaminants?", "Which current hazard classifications, transport provisions, and occupational exposure requirements apply in the target jurisdictions and at the relevant solution concentrations?", "What evidence is sufficient to requalify sodium nitrate after moisture uptake, suspected contamination, or substantial heating?" ], "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 sodium nitrate, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to identify sodium nitrate, assess the condition and suitability of a particular lot, and determine which uses or handling actions its evidence supports.", "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: Sodium nitrate-15N.", "1 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 62 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a sodium nitrate, 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": [ "Sodium nitrate-15N" ] } ], "standing": "Described in 62 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 1 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 sodium nitrate from another, and a sodium nitrate 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 sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a sodium nitrate 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 sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a sodium nitrate performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a sodium nitrate at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 sodium nitrate is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a sodium nitrate, 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 sodium nitrate, 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 sodium nitrate 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 } } } }