{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.metaphosphate","code":"thing-q412611","url":"https://ver.cy/models/thing/q412611/","name":"metaphosphate","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"Metaphosphate denotes a class of condensed phosphates with nominal anionic composition (PO3)n^n−, whose phosphate tetrahedra share oxygen atoms to form rings or extended chains, rather than one uniquely defined substance.","purpose":"Enable an agent to recognise metaphosphate, distinguish its molecular and condensed forms, assess a specified specimen, and select actions supported by its actual composition and state.","scope":{"in":["Distinction between monomeric metaphosphate and condensed metaphosphate structures","Phosphate connectivity, ring size, chain structure, and composition distributions","Counterion, protonation, hydration, purity, and grade of a specified material","Physical state and chemical speciation under recorded environmental conditions","Evidence supporting identification, transformation, handling, and use"],"out":["Orthophosphate, pyrophosphate, and general polyphosphate models beyond boundary comparisons","Metaphosphoric acid as an independently characterised acid","Complete models of individual counterion-specific salts","Products and formulations containing metaphosphate","Manufacturing equipment and complete production processes","Biochemical reaction systems in which metaphosphate is a proposed intermediate"],"boundaries":[]},"distinguishingFeatures":["Require molecularity alongside formula: monomeric PO3− is an experimentally studied gas-phase species, so a metaphosphate label does not establish a condensed salt. [Gas-phase metaphosphate study](https://pubs.acs.org/doi/10.1021/ja00291a081)","Distinguish cyclic structures through phosphorus-oxygen connectivity and ring size; tri-, tetra-, and hexametaphosphate structures have been characterised. [Crystalline metaphosphate study](https://pubs.acs.org/doi/10.1021/acs.inorgchem.6b00749)","Use oxygen-to-phosphorus ratio together with protonation, charge, and connectivity to distinguish metaphosphate from orthophosphate and pyrophosphate; elemental phosphorus content alone is insufficient.","Separate an independently supported PO3− intermediate from a metaphosphate-like transition state; these represent different mechanistic claims. [Phosphate hydrolysis study](https://pubmed.ncbi.nlm.nih.gov/12071768/)","Require structural evidence before treating a commercial metaphosphate name as a single molecular species."],"structure":{"bundles":[{"id":"metaphosphate-identity","name":"Metaphosphate identity","description":"Resolve the chemical entity behind a metaphosphate name.","layers":[{"id":"molecularity-and-connectivity","name":"Molecularity and connectivity","description":"Establish whether the entity is isolated or condensed.","findings":[{"id":"formula-does-not-resolve-structure","name":"Formula does not resolve structure","description":"Record molecularity and phosphorus-oxygen connectivity before assigning a specific metaphosphate identity.","questions":[{"text":"Does this reference mean monomeric PO3−, a discrete ring, or a polymeric material?","id":"formula-does-not-resolve-structure-q01","kind":"definition"},{"text":"What structural evidence distinguishes those interpretations for this specimen?","id":"formula-does-not-resolve-structure-q02","kind":"measurement"}]}]},{"id":"registry-and-salt-boundaries","name":"Registry and salt boundaries","description":"Connect the generic entry to specific chemical identities.","findings":[{"id":"identity-record-must-match-entity","name":"Identity record must match entity","description":"Treat counterion-specific salts and registry identifiers as explicit relationships rather than interchangeable names.","questions":[{"text":"Which counterion, protonation state, and hydration state does the cited identifier actually describe?","id":"identity-record-must-match-entity-q01","kind":"provenance"},{"text":"Does an existing model already own this exact species or salt?","id":"identity-record-must-match-entity-q02","kind":"boundary"}]}]}]},{"id":"condensed-composition","name":"Condensed composition","description":"Describe ring sizes, chain populations, and non-metaphosphate constituents.","layers":[{"id":"size-and-topology-populations","name":"Size and topology populations","description":"Resolve discrete species and structural distributions.","findings":[{"id":"report-species-distribution","name":"Report species distribution","description":"Record resolved rings and chains individually where possible, retaining unresolved fractions and analytical limits.","questions":[{"text":"Which ring sizes or chain populations are detected, and what fraction of total phosphorus does each represent?","id":"report-species-distribution-q01","kind":"measurement"},{"text":"Does the reported size describe a resolved molecule or an average over a distribution?","id":"report-species-distribution-q02","kind":"definition"}]}]},{"id":"assay-and-grade","name":"Assay and grade","description":"Separate phosphate speciation from bulk assay and supplier grade.","findings":[{"id":"total-phosphorus-is-not-purity","name":"Total phosphorus is not metaphosphate purity","description":"Require an assay basis that distinguishes target metaphosphate from other phosphorus-bearing constituents.","questions":[{"text":"Does the assay measure target metaphosphate, total phosphorus, or a phosphorus-oxide equivalent?","id":"total-phosphorus-is-not-purity-q01","kind":"measurement"},{"text":"What limits apply to other phosphate species, residual water, and counterion-related impurities for the intended grade?","id":"total-phosphorus-is-not-purity-q02","kind":"action"}]}]}]},{"id":"state-and-transformation","name":"State and transformation","description":"Track how environment and history affect the identified metaphosphate.","layers":[{"id":"phase-and-thermal-history","name":"Phase and thermal history","description":"Bind measured properties to material form and preparation history.","findings":[{"id":"properties-require-specified-form","name":"Properties require specified form","description":"Record crystalline or glassy character and distinguish melting, softening, and decomposition when interpreting thermal measurements.","questions":[{"text":"What phase evidence and thermal history accompany this metaphosphate specimen?","id":"properties-require-specified-form-q01","kind":"provenance"},{"text":"Which observed thermal event is melting, glass transition, crystallisation, or decomposition, and under what atmosphere?","id":"properties-require-specified-form-q02","kind":"measurement"}]}]},{"id":"aqueous-speciation-and-persistence","name":"Aqueous speciation and persistence","description":"Distinguish initial material identity from species present after water exposure.","findings":[{"id":"follow-species-after-dissolution","name":"Follow species after dissolution","description":"Track time-dependent phosphate composition rather than assuming the dissolved material retains its starting structure.","questions":[{"text":"How does phosphate speciation change with time at the recorded pH, temperature, and concentration?","id":"follow-species-after-dissolution-q01","kind":"measurement"},{"text":"What measured change would require rejecting, recharacterising, or replacing the preparation?","id":"follow-species-after-dissolution-q02","kind":"action"}]}]}]},{"id":"evidence-and-permitted-use","name":"Evidence and permitted use","description":"Translate chemical identity and measurements into defensible decisions.","layers":[{"id":"intermediate-evidence","name":"Intermediate evidence","description":"Assess claims involving monomeric metaphosphate.","findings":[{"id":"separate-observation-from-mechanistic-inference","name":"Separate observation from mechanistic inference","description":"Label direct detection, trapping evidence, calculations, and proposed transition-state character separately.","questions":[{"text":"Was PO3− directly detected, inferred from products, or proposed by a computational mechanism?","id":"separate-observation-from-mechanistic-inference-q01","kind":"provenance"},{"text":"What evidence supports a discrete intermediate rather than a metaphosphate-like transition state?","id":"separate-observation-from-mechanistic-inference-q02","kind":"boundary"}]}]},{"id":"material-use-qualification","name":"Material use qualification","description":"Qualify handling and function for a specified metaphosphate salt or mixture.","findings":[{"id":"use-requires-matched-material-evidence","name":"Use requires matched material evidence","description":"Tie proposed sequestration, dispersion, or other uses to performance tests and documentation for the actual material.","questions":[{"text":"What test demonstrates the required function at the intended dose, pH, and competing-ion composition?","id":"use-requires-matched-material-evidence-q01","kind":"measurement"},{"text":"Which current safety documentation and use requirements apply to this exact salt, mixture, grade, and jurisdiction?","id":"use-requires-matched-material-evidence-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of metaphosphate this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of metaphosphate this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of metaphosphate this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of metaphosphate this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of metaphosphate this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of metaphosphate this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain the class of condensed phosphates and its ring and chain forms, citing sources.","Identify specific metaphosphate compounds from labels and analytical data."],"mustNot":["Confuse metaphosphates with other phosphates in food or chemical records.","Present a class name as the identity of a particular compound without analysis.","Dispose of phosphate wastes into water bodies."],"requiresHuman":["Changing phosphate use in products released to water."]},"ethics":{"considerations":["Phosphates feed algal blooms that harm lakes, rivers and coastal waters."],"affectedParties":["Aquatic ecosystems","Communities relying on clean water","Chemists"]},"owners":{"steward":"Nobody owns the class; producers answer for specific compounds and products.","roles":[],"masterSystems":[]},"relations":[{"target":"Q5156940","type":"parent","note":"registry parent class"},{"target":"Q64692893","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.metaphosphate","Wikidata: Q412611 (https://www.wikidata.org/wiki/Q412611)"]},"properties":{"applicability":"required","items":["Metaphosphate identity interpretation: monomeric anion | discrete condensed anion | polymeric material | mixture | unresolved","Phosphate connectivity: isolated monomer | ring | chain | mixed | unresolved","Condensation size: phosphorus atoms per discrete anion; chain-length distribution with stated averaging method","Counterion and protonation: identified counterions, stoichiometric ratios, and protonation assignment","Phosphorus speciation: mol% of total phosphorus by assigned species, with method and uncertainty","Water content: mass%; hydrate stoichiometry when established","Physical state and environment: gas-phase ion | crystalline solid | glass | solution | suspension; temperature in K, pressure in Pa, and solution pH","Transformation behaviour: species fraction versus time; rate constants only with reaction model and conditions","Conditional physical properties: solubility in g/L; density in kg/m³; thermal events in K, each with composition and test conditions","Identity and grade evidence: structure-matched CAS, EC, or PubChem records; supplier specification; lot-specific certificate","Applicable handling classification: classification and exposure limits for the exact material, jurisdiction, source date, or not established"]},"recognition":{"applicability":"required","items":["Not visible as a class; specific compounds are identified by analysis and labels."]},"capabilities":{"applicability":"required","items":["Resolve whether a metaphosphate reference denotes a monomer, condensed structure, or commercial material.","Select structural and compositional analyses that distinguish plausible metaphosphate identities.","Compare lots using phosphate speciation, water content, counterion balance, and grade criteria.","Track changes in metaphosphate speciation during dissolution, storage, or heating.","Assess a proposed use against measured performance and material-specific restrictions.","Link a specimen to an existing specific-salt model without duplicating its authoritative identity."]},"hazards":{"applicability":"required","items":["Water pollution and algal blooms from phosphate releases.","Mix-ups between phosphate forms in formulations."]},"interfaces":{"applicability":"required","items":["The European Parliament and Council's REACH Regulation (EC) No 1907/2006 applies to metaphosphate substances manufactured, imported or used within its scope.","The European Parliament and Council's CLP Regulation (EC) No 1272/2008 governs classification, labelling and packaging of metaphosphate substances and mixtures placed on the EU market."]},"context":{"applicability":"required","items":["Metaphosphates occur in condensed phosphate salts and glasses used in materials chemistry, water treatment and industrial formulations.","Their suitability depends on the counterion, phosphate structure and physical state, so the class name alone does not establish a specimen's properties."]}},"sources":[{"title":"Wikidata item Q412611: metaphosphate","url":"https://www.wikidata.org/wiki/Q412611","note":"identity and sense of the item"},{"title":"Wikipedia: Metaphosphate","url":"https://en.wikipedia.org/wiki/Metaphosphate","note":"general description of the item"}],"openQuestions":["Does vr.tr.metaphosphate designate specifically monomeric PO3−, or the broader family of condensed metaphosphates?","Which existing world models or registry entries already own individual metaphosphate salts and overlapping polyphosphate concepts?","Which analytical methods can reliably distinguish ring sizes, chains, and hydrolysis products in the intended specimens?","Which composition-specific solubility, thermal, and persistence measurements are sufficiently supported for inclusion?","Which exact material identities and grades need jurisdiction-specific hazard, exposure-limit, or permitted-use research?"],"resources":{"spec":"/models/things/publications/thing-q412611/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q412611/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T11:16:28Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:30+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}