{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.calcium-fumarate","code":"thing-q836445","url":"https://ver.cy/models/thing/q836445/","name":"calcium fumarate","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":"Calcium fumarate is the calcium salt of fumaric acid, consisting of calcium cations and fumarate dianions, with the anhydrous formula CaC4H2O4.","purpose":"Enable an agent to recognise calcium fumarate, assess the identity and fitness of a particular material, and determine which handling or use decisions its evidence supports.","scope":{"in":["Calcium and fumarate identity, ionic stoichiometry and distinction between anhydrous and hydrated forms","Batch composition, assay basis, water content and relevant impurities","Physical form, dissolution behaviour and thermal behaviour under recorded conditions","Grade-specific specifications, traceability and evidence of conformity","Handling, storage and intended-use constraints supported by applicable evidence"],"out":["Fumaric acid, maleic acid and their separate substance models","Other calcium salts and fumarate salts with other counterions","Finished foods, supplements, medicines or mixtures containing calcium fumarate","Manufacturing equipment and complete synthesis-process models","Clinical calcium requirements, patient treatment and dosing decisions"],"boundaries":[]},"distinguishingFeatures":["Establish that both calcium and fumarate are present; calcium content alone cannot distinguish this material from another calcium salt.","Confirm the fumarate anion's trans configuration to distinguish it from the corresponding maleate material.","Check calcium-to-fumarate stoichiometry and acid-base composition to distinguish the declared salt from an acid salt or a mixture containing free fumaric acid.","Determine whether measured water represents a hydrate, adsorbed moisture or another contribution before comparing formula masses and assay results.","Distinguish an identified calcium fumarate substance batch from a formulation whose label merely lists calcium fumarate as an ingredient."],"structure":{"bundles":[{"id":"salt-identity-and-material-form","name":"Salt identity and material form","description":"Establish what the calcium fumarate designation means for the material being assessed.","layers":[{"id":"ionic-and-isomeric-identity","name":"Ionic and isomeric identity","description":"Resolve the calcium counterion, fumarate configuration and declared salt stoichiometry.","findings":[{"id":"calcium-fumarate-identity-evidence","name":"Evidence required for calcium fumarate identity","description":"Record evidence for both ionic components and their proportions, including discrimination from maleate and free fumaric acid.","questions":[{"text":"Which tests establish calcium and trans-fumarate identity rather than merely detecting calcium or an unspecified organic acid?","id":"calcium-fumarate-identity-evidence-q01","kind":"definition"},{"text":"Does the measured calcium-to-fumarate ratio support the declared charge-balanced salt, or indicate an acid salt or mixture?","id":"calcium-fumarate-identity-evidence-q02","kind":"boundary"}]}]},{"id":"hydration-and-identifier-boundaries","name":"Hydration and identifier boundaries","description":"Connect the demonstrated material form to its formula and external identity records.","findings":[{"id":"form-specific-identity","name":"Form-specific identity assignment","description":"Keep hydrate assignments and identifier mappings explicit rather than inheriting them from a generic product name.","questions":[{"text":"What evidence distinguishes an anhydrous form, a defined hydrate and calcium fumarate carrying variable surface moisture?","id":"form-specific-identity-q01","kind":"measurement"},{"text":"Which CAS, PubChem and EC records have been checked, and does each describe the same stoichiometry and hydration state as this material?","id":"form-specific-identity-q02","kind":"provenance"}]}]}]},{"id":"composition-and-batch-conformity","name":"Composition and batch conformity","description":"Represent the amount of calcium fumarate present and the evidence that a batch meets its declared specification.","layers":[{"id":"assay-and-calcium-accounting","name":"Assay and calcium accounting","description":"Make salt assay and elemental calcium measurements interpretable on consistent bases.","findings":[{"id":"composition-reporting-basis","name":"Composition reporting basis","description":"Associate each result with the tested form, analytical method and moisture correction used.","questions":[{"text":"Is the calcium fumarate assay reported as received, on a dry basis or on an anhydrous basis, and how was that basis established?","id":"composition-reporting-basis-q01","kind":"measurement"},{"text":"Does measured elemental calcium agree with the declared salt assay and hydration state within the stated uncertainty?","id":"composition-reporting-basis-q02","kind":"measurement"}]}]},{"id":"impurities-and-specifications","name":"Impurities and specifications","description":"Assess contaminants and compositional deviations against a traceable grade specification.","findings":[{"id":"batch-release-evidence","name":"Batch release evidence","description":"Link impurity results and acceptance limits to the actual batch and intended grade.","questions":[{"text":"What limits and methods apply to free fumaric acid, maleate, residual processing materials and contaminants relevant to this batch's intended use?","id":"batch-release-evidence-q01","kind":"measurement"},{"text":"Which specification version and batch-linked certificate support acceptance, and which missing or failed results require quarantine or rejection?","id":"batch-release-evidence-q02","kind":"action"}]}]}]},{"id":"physical-behaviour-and-condition","name":"Physical behaviour and condition","description":"Capture calcium fumarate behaviour in the solid state, in aqueous media and during thermal exposure.","layers":[{"id":"solid-state-and-thermal-response","name":"Solid state and thermal response","description":"Track material form and distinguish physical transitions from water loss or chemical change.","findings":[{"id":"interpreted-solid-state-observations","name":"Interpreted solid-state observations","description":"Preserve the evidence and conditions behind assignments of hydration, phase change and decomposition.","questions":[{"text":"Which observations establish the batch's solid-state form, and has conditioning or storage altered that assignment?","id":"interpreted-solid-state-observations-q01","kind":"measurement"},{"text":"For each reported thermal event, what evidence identifies dehydration, melting or decomposition, and under what test conditions?","id":"interpreted-solid-state-observations-q02","kind":"measurement"}]}]},{"id":"aqueous-behaviour","name":"Aqueous behaviour","description":"Describe dissolution and solution behaviour in a specified medium.","findings":[{"id":"condition-specific-dissolution","name":"Condition-specific dissolution evidence","description":"Separate equilibrium solubility, dissolution rate and observations caused by the surrounding medium.","questions":[{"text":"What equilibrium solubility and dissolution rate were measured for the identified form at a stated temperature, pH, particle size and medium composition?","id":"condition-specific-dissolution-q01","kind":"measurement"},{"text":"Does a proposed aqueous operation require checking precipitation, pH change or altered dissolved species before the material can be used?","id":"condition-specific-dissolution-q02","kind":"action"}]}]}]},{"id":"handling-and-use-eligibility","name":"Handling and use eligibility","description":"Connect calcium fumarate identity and grade to supported handling decisions and intended-use requirements.","layers":[{"id":"handling-and-storage-evidence","name":"Handling and storage evidence","description":"Determine precautions and condition limits from records applicable to the actual form and grade.","findings":[{"id":"applicable-safety-and-storage-record","name":"Applicable safety and storage record","description":"Record the scope and currency of safety evidence, including unresolved hazards and storage requirements.","questions":[{"text":"What current safety data support the hazard classification, dust precautions and any applicable exposure limits for this calcium fumarate material?","id":"applicable-safety-and-storage-record-q01","kind":"provenance"},{"text":"Which documented temperature, humidity, packaging and incompatibility constraints govern storage, and what excursion requires retesting?","id":"applicable-safety-and-storage-record-q02","kind":"action"}]}]},{"id":"grade-and-regulatory-use-boundaries","name":"Grade and regulatory use boundaries","description":"Assess a proposed use without transferring permissions between grades, products or jurisdictions.","findings":[{"id":"intended-use-evidence","name":"Evidence for a specified intended use","description":"Link the exact substance form and batch grade to applicable requirements while leaving finished-product decisions with the relevant product model.","questions":[{"text":"Which authoritative requirements cover this calcium fumarate form and proposed use in the specified jurisdiction, and which grade criteria do they impose?","id":"intended-use-evidence-q01","kind":"provenance"},{"text":"Which decisions can be supported by this batch's substance evidence, and which require a separate formulation, exposure or clinical assessment?","id":"intended-use-evidence-q02","kind":"boundary"}]}]}]},{"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 calcium fumarate this model covers, and on what evidence?","id":"evidence-confidence-notes-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 calcium fumarate this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these typical measurements hold for the sense of calcium fumarate this model covers, and on what evidence?","id":"evidence-measurements-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 calcium fumarate this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify calcium fumarate from labels, identifiers and certificates.","Report its permitted uses in food or supplements in a stated country from official sources.","Check a lot against its food- or pharmaceutical-grade specification."],"mustNot":["Use non-food-grade material in food or supplements.","Make health claims for products containing it that the regulator has not authorized.","Mislabel its content in a product."],"requiresHuman":["Changing a formulation sold to the public."]},"ethics":{"considerations":["Supplements are bought on trust; accurate labelling and claims protect consumers."],"affectedParties":["Consumers","Food and supplement producers"]},"owners":{"steward":"The producer that uses it; food safety authorities set the rules.","roles":[],"masterSystems":[]},"relations":[{"target":"Q11173","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.calcium-fumarate","Wikidata: Q836445 (https://www.wikidata.org/wiki/Q836445)"]},"properties":{"applicability":"required","items":["Declared chemical identity: Chemical name, formula, charge-balanced stoichiometry and verified identifiers for the declared form","Calcium-to-fumarate ratio: mol calcium/mol fumarate, with analytical methods and uncertainty","Water content and hydration assignment: % mass water and, where established, mol water/mol salt; method and conditioning history","Calcium fumarate assay: % mass, stating as-received, dry or anhydrous basis and method","Elemental calcium content: mg calcium/g material, with sample basis and method","Impurity profile: Free fumaric acid, maleate, other ions, residual solvents and relevant contaminants in stated units","Physical and solid-state form: Observed phase, particle form and evidence-supported hydrate or crystalline-phase assignment","Aqueous dissolution behaviour: Equilibrium concentration in g/L or mol/L and dissolution time under stated temperature, pH and medium conditions","Thermal events: °C, event assignment, mass change and test atmosphere or heating rate","Grade and intended-use eligibility: Batch-to-specification and intended-use-to-jurisdiction links, with versions and evidence"]},"recognition":{"applicability":"required","items":["Identity rests on the label and certificate, not on appearance."]},"capabilities":{"applicability":"required","items":["Reconcile a supplier's calcium fumarate identity with analytical evidence and form-specific identifiers.","Compare batches after normalising assay, water content and elemental calcium reporting bases.","Select identity and impurity tests needed to resolve a suspected mismatch or incomplete certificate.","Evaluate dissolution and thermal evidence against a proposed material-processing operation.","Accept, quarantine or reject a batch against an explicit calcium fumarate specification.","Identify missing evidence before authorising a grade-specific use or storage decision."]},"hazards":{"applicability":"required","items":["Contaminated or wrong-grade material entering food.","Mislabelled calcium content in supplements."]},"interfaces":{"applicability":"required","items":["The Globally Harmonized System of Classification and Labelling of Chemicals, issued by the United Nations, provides the framework for evaluating and communicating chemical hazards for calcium fumarate where adopted."]},"context":{"applicability":"required","items":["Calcium fumarate is encountered as a chemical reagent and as a material evaluated for calcium delivery in formulation research.","Laboratory and industrial users distinguish anhydrous material from hydrated forms because water content affects composition and mass calculations.","Suitability for a particular formulation depends on documented identity, purity and the requirements of the intended use."]}},"sources":[{"title":"Wikidata item Q836445: calcium fumarate","url":"https://www.wikidata.org/wiki/Q836445","note":"identity and sense of the item"},{"title":"Wikipedia: Calcium fumarate","url":"https://en.wikipedia.org/wiki/Calcium_fumarate","note":"general description of the item"}],"openQuestions":["Does the authoritative registry intend calcium fumarate to include multiple hydration states or acid-salt variants, and which verified identifiers match that boundary?","Which independently supported analytical methods best distinguish calcium fumarate from calcium maleate, free fumaric acid and mixtures of calcium-bearing materials?","What reliable form-specific measurements establish solubility, solid-state behaviour and thermal decomposition, and which commonly reported constants remain unsupported?","Which current grade standards and jurisdiction-specific rules explicitly cover calcium fumarate for the intended applications?","What evidence establishes storage stability, applicable hazard classifications and exposure limits for the material forms actually supplied?"],"resources":{"spec":"/models/things/publications/thing-q836445/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q836445/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T08:20:05Z","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 2026-10-07T10:10:33+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}