{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.lithium-sulfite","code":"thing-q6647969","url":"https://ver.cy/models/thing/q6647969/","name":"lithium sulfite","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":"Lithium sulfite is an inorganic salt with formula Li2SO3, composed of lithium cations and sulfite anions, in which sulfur has oxidation state +4.","purpose":"Enable an agent to identify lithium sulfite, assess the composition and condition of a sample, and determine whether evidence supports its intended handling or use.","scope":{"in":["Lithium sulfite identity and verified identifier mappings","Sample purity, water content, and sulfur-containing impurities","Solid-phase identity and condition-dependent solution composition","Measured physical properties with experimental conditions","Chemical stability and evidence of transformation","Substance-specific hazard evidence and suitability criteria"],"out":["Lithium sulfate, lithium sulfide, and lithium hydrogen sulfite as independently modeled substances","Complete formulations or commercial products containing lithium sulfite","Manufacturing plants and synthesis-process design","Battery or electrode performance beyond the contribution attributed to lithium sulfite","General laboratory operating procedures","Medical uses and biological effects of other lithium salts"],"boundaries":[]},"distinguishingFeatures":["Require identity consistent with Li2SO3; PubChem associates this formula with sulfurous acid, lithium salt (1:2), CID 11665397. [PubChem identity record](https://pubchem.ncbi.nlm.nih.gov/compound/Sulfurous-acid_-lithium-salt-_1_2)","Require an anion-sensitive measurement to distinguish sulfite from sulfate, sulfide, and other sulfur species; lithium detection alone is insufficient.","Check lithium-to-sulfur stoichiometry together with anion identity rather than accepting a supplier name as proof.","Distinguish water incorporated in a characterized solid phase from adsorbed moisture and water used as a solvent.","Distinguish a confirmed lithium sulfite phase from a tentative assignment within a mixed surface film or formulation."],"structure":{"bundles":[{"id":"substance-identity","name":"Substance identity","description":"Establish what qualifies as lithium sulfite and how identifiers map to that identity.","layers":[{"id":"chemical-recognition","name":"Chemical recognition","description":"Connect the claimed substance to composition and anion evidence.","findings":[{"id":"composition-and-anion","name":"Composition and anion confirmation","description":"Require complementary evidence for lithium content, stoichiometry, and sulfite assignment.","questions":[{"text":"What evidence establishes sulfite as the relevant anion rather than sulfate, sulfide, or another sulfur species?","id":"composition-and-anion-q01","kind":"definition"},{"text":"Does the measured lithium-to-sulfur ratio support the claimed composition within analytical uncertainty?","id":"composition-and-anion-q02","kind":"measurement"}]}]},{"id":"identifier-boundaries","name":"Identifier boundaries","description":"Keep registry, chemical database, and supplier identities aligned.","findings":[{"id":"identifier-form-matching","name":"Identifier and form matching","description":"Treat identifier mappings as claims requiring a source and a clearly specified material form.","questions":[{"text":"Which authoritative records verify the CAS number, PubChem CID, and any EC number for this identity?","id":"identifier-form-matching-q01","kind":"provenance"},{"text":"Does each identifier describe the anhydrous substance, a specified hydrate, or a mixture?","id":"identifier-form-matching-q02","kind":"boundary"}]}]}]},{"id":"composition-and-quality","name":"Composition and quality","description":"Represent actual sulfite content, water, and impurities in a sample.","layers":[{"id":"assay-basis","name":"Assay basis","description":"Make sulfite purity measurements comparable and chemically selective.","findings":[{"id":"selective-sulfite-assay","name":"Selective sulfite assay","description":"Record the measurement basis, selectivity, and uncertainty of the reported assay.","questions":[{"text":"What method measures sulfite, and which other species could interfere with its response?","id":"selective-sulfite-assay-q01","kind":"measurement"},{"text":"Is the assay reported on an as-received, dry, or explicitly hydrated basis?","id":"selective-sulfite-assay-q02","kind":"measurement"}]}]},{"id":"water-and-impurities","name":"Water and impurities","description":"Separate water contributions from chemically distinct contaminants.","findings":[{"id":"impurity-and-water-profile","name":"Impurity and water profile","description":"Characterize water and non-sulfite constituents without assuming an unspecified purity deficit is harmless.","questions":[{"text":"What water content is measured, and what evidence distinguishes structural water from surface moisture?","id":"impurity-and-water-profile-q01","kind":"measurement"},{"text":"Which sulfur species, other cations, and preparation residues are present at application-relevant levels?","id":"impurity-and-water-profile-q02","kind":"measurement"}]}]}]},{"id":"phase-and-properties","name":"Phase and properties","description":"Connect physical-property observations to the actual form and measurement conditions.","layers":[{"id":"solid-and-thermal-state","name":"Solid and thermal state","description":"Identify solid phases and interpret thermal behavior.","findings":[{"id":"phase-qualified-properties","name":"Phase-qualified properties","description":"Attach structural and thermal claims to characterized samples and methods.","questions":[{"text":"Which diffraction or spectroscopic evidence supports the reported lithium sulfite phase and any hydrate assignment?","id":"phase-qualified-properties-q01","kind":"measurement"},{"text":"Are reported thermal events melting, water loss, or chemical decomposition, and under what atmosphere and heating rate?","id":"phase-qualified-properties-q02","kind":"measurement"}]}]},{"id":"dissolved-state","name":"Dissolved state","description":"Describe dissolution and solution composition without assuming the solid identity persists as discrete units.","findings":[{"id":"solubility-and-speciation","name":"Solubility and speciation","description":"Require solution conditions and analytical distinctions between total dissolved sulfur and sulfite species.","questions":[{"text":"What solubility is measured at a stated temperature, solvent composition, and equilibration time?","id":"solubility-and-speciation-q01","kind":"measurement"},{"text":"How are sulfite, hydrogen sulfite, and other dissolved sulfur species distinguished at the recorded pH?","id":"solubility-and-speciation-q02","kind":"boundary"}]}]}]},{"id":"stability-and-transformation","name":"Stability and transformation","description":"Track whether storage or treatment changes the lithium sulfite material.","layers":[{"id":"storage-stability","name":"Storage stability","description":"Relate exposure history to measured changes in water and sulfur composition.","findings":[{"id":"composition-drift","name":"Composition drift","description":"Use repeated measurements to establish stability rather than assigning an unsupported shelf life.","questions":[{"text":"Do sulfite assay, sulfate content, or water content change under the documented storage conditions?","id":"composition-drift-q01","kind":"measurement"},{"text":"What measured change or exposure event should trigger retesting or quarantine?","id":"composition-drift-q02","kind":"action"}]}]},{"id":"treatment-response","name":"Treatment response","description":"Assess transformations under conditions relevant to the intended use.","findings":[{"id":"reaction-and-product-evidence","name":"Reaction and product evidence","description":"Separate demonstrated lithium sulfite behavior from predictions based on broader sulfite chemistry.","questions":[{"text":"What lithium-sulfite-specific evidence establishes products or gas evolution during acid contact, oxidant exposure, or heating?","id":"reaction-and-product-evidence-q01","kind":"provenance"},{"text":"Which proposed treatment conditions require compatibility testing before the material is used?","id":"reaction-and-product-evidence-q02","kind":"action"}]}]}]},{"id":"handling-and-use-decisions","name":"Handling and use decisions","description":"Connect verified material evidence to handling requirements and application acceptance.","layers":[{"id":"hazard-evidence","name":"Hazard evidence","description":"Establish applicable hazard information for lithium sulfite in the supplied form.","findings":[{"id":"classification-and-exposure","name":"Classification and exposure","description":"Record the authority, scope, and date behind each hazard classification or exposure constraint.","questions":[{"text":"Which current SDS or authoritative assessment explicitly covers lithium sulfite and this material form?","id":"classification-and-exposure-q01","kind":"provenance"},{"text":"Which GHS classifications and exposure limits are supported, and are any limits expressed as lithium, dust, or a separately generated gas?","id":"classification-and-exposure-q02","kind":"boundary"}]}]},{"id":"application-acceptance","name":"Application acceptance","description":"Define evidence required to use a particular lot or assigned constituent.","findings":[{"id":"fitness-for-intended-use","name":"Fitness for intended use","description":"Tie acceptance to sulfite content, impurity tolerances, physical form, and confidence of identification.","questions":[{"text":"What limits on sulfite assay, sulfate contamination, water content, and physical form does the intended task require?","id":"fitness-for-intended-use-q01","kind":"action"},{"text":"If lithium sulfite is assigned within a film or mixture, what evidence supports that assignment and its relevance to the proposed use?","id":"fitness-for-intended-use-q02","kind":"provenance"}]}]}]},{"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 lithium sulfite 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 lithium sulfite 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 lithium sulfite this model covers, and on what evidence?","id":"evidence-measurements-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 lithium sulfite 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 lithium sulfite this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify lithium sulfite from labels, identifiers and analytical data.","Report its hazards from the supplier's safety data sheet.","Record a sample's condition for its keeper."],"mustNot":["Mix it with acids where sulfur dioxide can reach people.","Dispose of it in drains or ordinary waste.","Confuse it with lithium sulfate or sulfide in records or orders.","Handle it outside a controlled laboratory setting."],"requiresHuman":["Disposal of stocks."]},"ethics":{"considerations":["Similar names lead to ordering and handling mistakes that put staff at risk."],"affectedParties":["Laboratory staff","Waste handlers"]},"owners":{"steward":"The laboratory or organization that holds the material.","roles":[],"masterSystems":[]},"relations":[{"target":"Q65178025","type":"parent","note":"registry parent class"},{"target":"Q72694863","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.lithium-sulfite","Wikidata: Q6647969 (https://www.wikidata.org/wiki/Q6647969)"]},"properties":{"applicability":"required","items":["Identity verification: unverified label | analytically supported | conflicting evidence","Lithium-to-sulfur ratio: mol Li/mol S; nominal formula ratio 2, with uncertainty","Lithium sulfite assay: mass %, specifying as-received or dry basis and analytical method","Sulfur-species composition: mol % of total sulfur assigned to each measured species, with detection limits","Water content and assignment: mass % water; mol H2O/mol Li2SO3 only when a hydrate assignment is supported","Physical form and phase assignment: bulk solid | dissolved constituent | mixed-phase constituent | surface-associated species; identified phase or unresolved","Solution conditions: pH, temperature in °C, concentration in mol/L, solvent composition","Thermal-event assignment: °C with atmosphere, heating rate, method, and melting/dehydration/decomposition assignment","Storage exposure history: documented temperature, humidity, atmosphere, duration, and container condition","Hazard and regulatory evidence: linked substance-specific SDS or authoritative record, jurisdiction, date, and material form"]},"recognition":{"applicability":"required","items":["Identity rests on the label and analysis, not appearance.","Labels must be read carefully to distinguish sulfite from sulfate and sulfide."]},"capabilities":{"applicability":"required","items":["Resolve a lithium sulfite label against analytical evidence and verified identifiers.","Compare lots using sulfite assay, sulfur impurities, and water content on consistent bases.","Calculate substance quantities from a validated assay and hydration assignment.","Flag composition changes after storage, dissolution, or thermal treatment.","Assess whether a proposed use has adequate material-specific compatibility and hazard evidence.","Accept, quarantine, or request additional characterization against an explicit application specification."]},"hazards":{"applicability":"required","items":["Release of sulfur dioxide with acids.","Slow oxidation in air changes the compound.","Irritation from dust."]},"interfaces":{"applicability":"required","items":["Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations."]},"context":{"applicability":"required","items":["Lithium sulfite is encountered in inorganic chemistry when studying lithium salts and sulfur-containing anions.","It may be considered in analytical work on lithium-bearing materials where sulfite must be distinguished from sulfate and other sulfur species.","Its suitability for a particular investigation depends on evidence for composition, hydration and sample purity."]}},"sources":[{"title":"Wikidata item Q6647969: lithium sulfite","url":"https://www.wikidata.org/wiki/Q6647969","note":"identity and sense of the item"},{"title":"Wikipedia: Lithium sulfite","url":"https://en.wikipedia.org/wiki/Lithium_sulfite","note":"general description of the item"}],"openQuestions":["Which CAS and EC identifiers are authoritative, and do any distinguish anhydrous lithium sulfite from hydrated forms?","Which solid phases or hydrates are experimentally established, and what reliable density, solubility, and thermal data apply to each?","How rapidly do sulfite content and water content change under defined oxygen, humidity, temperature, and solution-pH conditions?","Which analytical methods reliably distinguish lithium sulfite from related sulfur species in bulk samples and mixed surface films?","What substance-specific hazard classifications, exposure constraints, compatibility evidence, and demonstrated uses are supported by primary sources?"],"resources":{"spec":"/models/things/publications/thing-q6647969/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q6647969/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T10:59:34Z","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 2026-10-07T10:10:32+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}