Calcium Acetate Formula, Properties and Sourcing (CAS 62-54-4)
Calcium Acetate (CAS 62-54-4), also called calcium diacetate or calcium ethanoate, is the calcium salt of acetic acid. Its anhydrous formula is C4H6CaO4, commonly written Ca(C2H3O2)2, and its anhydrous molecular weight is 158.166 g/mol. Buyers must identify the anhydrous or hydrate form and qualify the material through a current specification, analytical methods, lot COA, SDS and application-specific requirements.
Calcium Acetate identity at a glance
| Primary name | Calcium Acetate |
|---|---|
| IUPAC name | Calcium diacetate |
| Other name | Calcium ethanoate; acetic acid, calcium salt |
| CAS Registry Number | 62-54-4 |
| EC number | 200-540-9 |
| Anhydrous formula | C4H6CaO4 or Ca(C2H3O2)2 |
| Anhydrous molecular weight | 158.166 g/mol (NIST; commonly rounded to 158.17) |
| Monohydrate formula | C4H6CaO4·H2O |
| Monohydrate molecular weight | 176.18 g/mol (EU E263 specification) |
| InChIKey | VSGNNIFQASZAOI-UHFFFAOYSA-L |
| Machine-readable structure | CC(=O)[O-].CC(=O)[O-].[Ca+2] (PubChem canonical SMILES) |
Identity references: NIST Chemistry WebBook, PubChem CID 6116 and ECHA substance information.
What is the formula for Calcium Acetate?
The formula Ca(C2H3O2)2 shows one calcium ion associated with two acetate ions. The elemental formula C4H6CaO4 describes the same anhydrous composition. A formula alone is not a complete purchasing identity: a buyer should also match CAS 62-54-4, the chemical name, structure, hydration state and applicable analytical tests.
“Calcium ethanoate” is a systematic-name variant of calcium acetate. It should not be confused with calcium propionate, calcium citrate, calcium lactate or other calcium salts that have different formulas, properties and regulatory records.
Anhydrous versus monohydrate Calcium Acetate
The EU E263 specification distinguishes anhydrous Calcium Acetate from the monohydrate. This difference changes formula weight and affects how assay, water and concentration calculations are interpreted. A quotation or COA that states only “Calcium Acetate” without form and basis can be ambiguous.
| Question | Why it matters | Evidence to request |
|---|---|---|
| Which physical form is supplied? | Anhydrous and monohydrate have different formula weights and water context | Controlled product name, form and specification scope |
| What is the assay basis? | A result may be reported as supplied, dried or on an anhydrous basis | Method, calculation formula, units and acceptance criterion |
| How is water measured? | Loss on drying and water-specific methods are not interchangeable | Named method, conditions, limit and applicable lot result |
| Which molecular weight is used? | 158.166 and 176.18 apply to different forms | Form-matched calculation and buyer approval |
Reference properties are not a supplier specification
Commission Regulation (EU) No 231/2012 describes anhydrous E263 as a white, hygroscopic, bulky crystalline solid and allows the monohydrate as needles, granules or powder. It also publishes identity and purity fields for food-additive E263. Those regulatory values are useful reference context, but they do not prove that a current Longchang lot complies with E263 or with any buyer’s specification.
A current supplier specification should identify the material form, assay basis, methods, units and acceptance limits. A lot COA should report results against that approved specification. Neither a literature property table nor CAS 62-54-4 replaces those controlled documents.
How Calcium Acetate uses should be screened
Food regulations in the United States and European Union contain Calcium Acetate records, but permitted technical functions, food categories and conditions depend on the jurisdiction. A chemical name or E-number does not authorize unrestricted use. Read the Calcium Acetate E263 food-use and regulatory guide for market-specific examples and qualification questions.
DailyMed also lists named finished Calcium Acetate capsules as prescription phosphate binders. Those labels apply to their finished dosage forms, strengths and approvals. They do not turn an unspecified raw material into an approved medicine, establish pharmaceutical grade or justify patient-use instructions on a supplier page.
For any industrial or formulation use outside a cited regulatory record, the buyer should validate the technical function, impurity profile, hydration state, process conditions, performance, safety controls and destination-market obligations. A generic use list is only a screening prompt.
Legacy source-record fields requiring confirmation
The historical Longchang product record displayed the fields below without a visible current specification number, method set, lot identity, effective date or approval status. They are retained only as RFQ questions—not as current limits, lot results, grade claims, packaging commitments or regulatory evidence.
| Historical field | Old page value | Required current confirmation |
|---|---|---|
| Appearance / solution | White powder; clarified colorless aqueous solution | Controlled wording, sample preparation, method and acceptance criteria |
| pH | 6.3–9.6; one displayed result 8.54 | Concentration, temperature, method, current range and applicable lot result |
| Water | ≤7.0%; one displayed result 1.05% | Material form, test method, basis and current limit |
| Assay | 99.0–100.5%; one displayed result 99.66% | Method, form/basis, current acceptance range and applicable lot COA |
| Chloride, sulfate, fluoride, nitrate, metals and volatiles | Individual old limits/results | Current applicability, named methods, units and limits |
| Compendial conclusion | “Conforms with USP27” | Current requested compendium/edition, full method set and authorized disposition |
| Packaging | 25 kg/drum | Current pack size, material/lining, closure, pallet and destination requirements |
Calcium Acetate sourcing checklist
- Confirm name, CAS 62-54-4, anhydrous or hydrate form and assay basis.
- Define the intended technical function, process and destination market.
- Provide the buyer specification or list required tests, methods, units and limits.
- Request the current supplier specification and applicable lot COA.
- Request the current SDS and any market-, food-category- or process-specific documents.
- State sample need, quantity, packaging constraints, destination and requested delivery window.
- Qualify the sample in the buyer’s process and quality system before scale-up.
Request current Calcium Acetate information
Open the Calcium Acetate CAS 62-54-4 sourcing page to request current specification, COA, SDS, sample and commercial information.
Email info@longchangchemical.com with the form, application, destination market, target tests/limits, quantity, packaging and document requirements.
Frequently asked questions
What is the chemical formula of Calcium Acetate?
The anhydrous formula is C4H6CaO4, commonly written Ca(C2H3O2)2.
Is Calcium Acetate the same as calcium ethanoate?
Yes. Calcium ethanoate is another name for the calcium salt of acetic acid identified by CAS 62-54-4.
Does CAS 62-54-4 prove food or pharmaceutical grade?
No. CAS identifies the substance record. Grade, regulatory suitability, manufacturing controls and lot compliance require separate current evidence.
Can the old 99.0–100.5% field be treated as a current specification?
No. The legacy page did not identify a current controlled specification, method set, lot or effective date. Request current documents for the material being evaluated.
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