disodium (2E)-but-2-enedioate
Enable an agent to identify disodium (2E)-but-2-enedioate, assess the composition and condition of a specific sample, and determine whether evidence supports its intended handling or use.
Bundle → Layer → Finding → Questions Filled
5 bundles · 9 layers · 13 findings · 21 questions
Fumarate salt identity Establishes the molecular configuration, counterion stoichiometry and documentary identity of the registered substance.
Anion and counterions
Records what chemical entity the name specifies and how a sample is matched to it.
E-configured disodium identity
Identity assessment must establish the fumarate configuration and two-sodium stoichiometry rather than rely on the presence of sodium or a dicarboxylate alone.
- What analytical evidence distinguishes the E-configured fumarate anion from maleate in this sample? measurement
- What evidence supports two sodium equivalents per fumarate rather than a hydrogen fumarate salt or a mixture? definition
Identifier and form boundaries
Connects verified names and identifiers to their exact chemical and material-form scope.
Verified identity records
External identifiers require source verification and an explicit check of whether they describe the nominal salt, a hydrate or a preparation.
- Which authoritative records establish the CAS number, PubChem CID and any EC identifier for this exact disodium E salt? provenance
- Does each linked record include or exclude particular hydrates, solutions or protonation states? boundary
Sample composition and grade Makes the amount and quality of disodium fumarate in a particular sample assessable.
Water and assay basis
Relates sample mass to measured disodium fumarate content without assuming a hydrate state.
Quantified salt content
Assay interpretation must distinguish as-received composition from dry-basis composition and independently characterize water.
- What are the measured assay and water content, and on what basis is each reported? measurement
- Does evidence identify a stoichiometric hydrate, adsorbed moisture or an unresolved combination? boundary
Impurities and acceptance
Links relevant impurities and grade claims to measured results and explicit limits.
Lot-specific suitability
A grade claim needs a specification and lot evidence, including methods capable of detecting relevant related substances.
- Which methods quantify maleate, other organic impurities and residual inorganic constituents, and with what detection limits? measurement
- Which assay and impurity limits must this lot satisfy for the intended application? action
Solid and solution behavior Describes the conditions under which the material changes physical form or can be prepared as a solution.
Solid form and thermal events
Associates solid-state observations with characterized samples and measurement conditions.
Interpreted thermal behavior
Reported thermal constants must identify the event observed and the initial material form.
- What solid form and water content were established before thermal analysis? measurement
- Do observed thermal events represent dehydration, a phase transition, melting or decomposition under the stated atmosphere and heating rate? measurement
Dissolution and solution speciation
Records solubility, concentration and acid-base conditions without treating a dissolved salt as an intact neutral molecule.
Conditioned solution preparation
Solution preparation requires a verified concentration basis and attention to pH-dependent fumarate protonation.
- What equilibrium solubility and solution pH are supported at the intended solvent composition and temperature? measurement
- How should assay, water content and any pH adjustment be accounted for when preparing the required total fumarate concentration? action
Handling and use evidence Connects material-specific hazard, storage and permitted-use evidence to decisions about a lot.
Hazards and exposure
Records verified hazard classifications and exposure guidance for the relevant form and jurisdiction.
Applicable safety evidence
Hazard conclusions need traceable evidence matching the substance and preparation; missing data remain unresolved.
- Which current safety data sheet or authoritative assessment applies to this identity, grade and physical form? provenance
- What hazard classification and exposure guidance are actually documented, and are any limits substance-specific or general particulate limits? boundary
Storage and application constraints
Links stability observations, packaging requirements and application eligibility to actionable evidence.
Supported storage and use
Storage and application decisions must be supported for the actual material rather than inferred from the fumarate name.
- What evidence establishes suitable humidity, temperature, packaging and retest conditions, including any change in water content or assay during storage? provenance
- Which jurisdiction-specific requirements and grade specifications must be met before this lot can enter the proposed application? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of disodium (2E)-but-2-enedioate this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of disodium (2E)-but-2-enedioate this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of disodium (2E)-but-2-enedioate this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of disodium (2E)-but-2-enedioate this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of disodium (2E)-but-2-enedioate this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
What it is Filled
Disodium (2E)-but-2-enedioate, commonly called disodium fumarate, is the fully neutralized sodium salt of fumaric acid, consisting of two sodium cations per fumarate dianion with trans geometry across its carbon-carbon double bond.
In scope
- The E-configured but-2-enedioate dianion and its two sodium counterions
- Distinction between nominal anhydrous composition, hydrated solid forms and aqueous preparations
- Sample assay, water content, impurities and evidence of identity
- Physical properties reported with material form, conditions and measurement method
- Grade, stability, hazard evidence and jurisdiction-specific identity records
Out of scope
- Fumaric acid and monosodium hydrogen fumarate as separately identified substances
- Disodium maleate and other compounds with different connectivity or alkene configuration
- Finished formulations containing disodium fumarate
- Manufacturing equipment and complete synthesis processes
- Biological fumarate metabolism and therapeutic effects of other fumarate compounds
Why it exists Filled
Enable an agent to identify disodium (2E)-but-2-enedioate, assess the composition and condition of a specific sample, and determine whether evidence supports its intended handling or use.
Distinguishing features Filled
- The name specifies the E configuration of the carbon-carbon double bond; evidence must distinguish this from the Z configuration associated with maleate.
- The nominal salt contains two sodium ions per fumarate dianion, distinguishing it from fumaric acid and the singly neutralized sodium salt.
- The nominal anhydrous formula derived from the name is C4H2Na2O4; measured water content must be accounted for before comparing a sample against this formula.
- The sodium-counterion identity distinguishes it from other fumarate salts, while the dianion distinguishes it from covalent fumarate esters.
- A matching label alone does not establish that a hydrate, solution or formulated product represents the same material form as a reference sample.
What robots and AI may and may not do Filled
Must not
- Use non-food-grade material in food.
- Confuse it with the monosodium salt or other fumarates in records.
- Mislabel products that contain it.
Only with a human decision
- Changing a food formulation sold to the public.
May
- Identify disodium fumarate by its systematic and common names from labels and certificates.
- Report its permitted uses in food in a stated country from official sources.
- Check a lot against its food-grade specification.
Moral aspects Filled
- People rely on additive labels to follow diets and avoid sodium.
Who is affected
- Consumers
- People on low-sodium diets
- Food producers
Owners Filled
Steward
The producer that uses it; food safety authorities set the rules.
Links to other meta-models Filled
parent
- Q15709156 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.disodium-2e-but-2-enedioate
- Wikidata: Q836457 (https://www.wikidata.org/wiki/Q836457)
Direct properties required Filled
- Chemical identity and alkene configuration: Disodium salt of (2E)-but-2-enedioic acid; identity confirmed, provisional or unresolved
- Sodium-to-fumarate molar ratio: mol/mol; nominal ratio 2:1
- Material form: Anhydrous solid, characterized hydrate, solid with unresolved water content, aqueous solution or other specified preparation
- Water content: % mass fraction, with method; mol H2O per formula unit only when hydrate stoichiometry is established
- Disodium fumarate assay: % mass fraction, explicitly as received, on a dry basis or on another justified basis
- Related substances and residual ions: % mass fraction or mg/kg for individually identified analytes, with detection limits
- Aqueous pH: pH at stated concentration, temperature and preparation conditions
- Solubility: g/L or mol/L in a specified solvent at stated temperature and pH, with equilibrium basis
- Thermal behavior: °C with event identified as dehydration, phase transition, melting or decomposition and method stated
- Grade and documentary identity: Links to applicable specification, lot certificate, verified identifier record and safety data sheet
Recognition required Filled
- Identity rests on the label and certificate, not appearance.
- Labels may use the systematic name, the common name or an additive code.
Capabilities and actions required Filled
- Reconcile a sample label and identifier records against the E-configured disodium fumarate identity.
- Calculate an amount of fumarate from sample mass using verified assay and water-content basis.
- Select identity and impurity measurements that can distinguish maleate, incomplete neutralization and unrelated sodium salts.
- Assess whether a measured solubility supports a proposed solution concentration under specified conditions.
- Accept, quarantine or request further testing of a lot against an explicit application specification.
- Determine handling and storage actions from safety and stability evidence applicable to the actual material form.
Hazards and failure modes required Filled
- Mix-ups between related salts.
- Wrong-grade material entering food.
Standards and interfaces required Filled
- 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 disodium fumarate where adopted.
Context of use required Filled
- Disodium fumarate is encountered as a laboratory reagent supplying fumarate ions for chemical and biochemical work.
- It can be used in research involving fumarate metabolism or the behaviour of fumarate salts in solution.
- Users distinguish it from fumaric acid and monosodium fumarate because neutralization state affects composition and solution behaviour.
Sources Filled
- Wikidata item Q836457: disodium (2E)-but-2-enedioate - identity and sense of the item
- Wikipedia: Sodium fumarate - general description of the item
Open questions
- Which authoritative identity records confirm the synonym disodium fumarate and the exact CAS, PubChem and EC identifier mappings for this registry entry?
- Which hydrate or solid forms are experimentally established, and how should they be represented within the registry's existing granularity?
- What reliable measurements establish solubility, solution pH and thermal behavior for explicitly characterized material forms?
- Which validated assays distinguish fumarate from maleate and resolve sodium stoichiometry, water content and relevant impurities?
- What current hazard classifications, exposure guidance, storage evidence and application-specific permissions apply to this exact salt rather than related fumarate substances?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q836457/spec.json