Calcium ascorbate

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title: "Calcium ascorbate" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["ascorbates", "calcium-compounds", "vitamers", "vitamin-c", "e-number-additives"] topic_path: "general/ascorbates" source: "https://en.wikipedia.org/wiki/Calcium_ascorbate" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 476993180 | ImageFile = Calcium ascorbate.png | ImageClass = skin-invert-image | ImageSize = 200px | IUPACName = Calcium (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2H-furan-3-olate | OtherNames = Calcium diascorbate; Calcium L-ascorbate; Hemicalcium ascorbate; Calci-C; E 302 |Section1={{Chembox Identifiers | ChemSpiderID_Ref = | ChemSpiderID = 4445637 | InChI = 1/2C6H8O6.Ca.2H2O/c27-1-2(8)5-3(9)4(10)6(11)12-5;;;/h22,5,7-8,10-11H,1H2;;21H2/q;;+2;;/p-2/t22-,5+;;;/m00.../s1 | InChIKey = FWGHSAZDJGAESH-ORZGFQGYBD | CASNo_Ref = | CASNo = 5743-27-1 | UNII_Ref = | UNII = J96U0ZD4Y6 | StdInChI_Ref = | StdInChI = 1S/2C6H8O6.Ca.2H2O/c27-1-2(8)5-3(9)4(10)6(11)12-5;;;/h22,5,7-8,10-11H,1H2;;21H2/q;;+2;;/p-2/t22-,5+;;;/m00.../s1 | StdInChIKey_Ref = | StdInChIKey = FWGHSAZDJGAESH-FWCDDDAWSA-L | PubChem = 21967 | SMILES = [Ca+2].O=C1C(\O)=C([O-])O[C@@H]1C@@HCO.O=C1C(\O)=C([O-])O[C@@H]1C@@HCO.O.O |Section2={{Chembox Properties | C=12 | H=14 | Ca=1 | O=12 | Formula=Ca(C6H7O6)2 | Appearance = | Density = | MeltingPt = | BoilingPt = | Solubility = About 50 g/100 mL | SolubleOther = Slightly soluble in alcohol; insoluble in ether |Section3={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }}

Calcium ascorbate is a compound with the molecular formula CaC12H14O12. It is the calcium salt of ascorbic acid, one of the mineral ascorbates. It is approximately 10% calcium by mass.

As a food additive, it has the E number E 302. It is approved for use as a food in the EU, USA and Australia and New Zealand.

References

References

  1. "Reference Tables: Description and Solubility - C".
  2. "Current EU approved additives and their E Numbers".
  3. "Listing of Food Additives Status Part I".
  4. (8 September 2011). "Standard 1.2.4 - Labelling of ingredients".

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ascorbatescalcium-compoundsvitamersvitamin-ce-number-additives