{{Chembox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 476993180 | ImageFile = Calcium ascorbate.png | ImageClass = skin-invert-image | ImageSize = 200px | IUPACName = Calcium (2''R'')-2-[(1''S'')-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2''H''-furan-3-olate | OtherNames = Calcium diascorbate; Calcium <small>L</small>-ascorbate; Hemicalcium ascorbate; Calci-C; E&nbsp;302 |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 4445637 | InChI = 1/2C6H8O6.Ca.2H2O/c2*7-1-2(8)5-3(9)4(10)6(11)12-5;;;/h2*2,5,7-8,10-11H,1H2;;2*1H2/q;;+2;;/p-2/t2*2-,5+;;;/m00.../s1 | InChIKey = FWGHSAZDJGAESH-ORZGFQGYBD | CASNo_Ref = {{cascite|correct|CAS}} | CASNo = 5743-27-1 | UNII_Ref = {{fdacite|correct|FDA}} | UNII = J96U0ZD4Y6 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/2C6H8O6.Ca.2H2O/c2*7-1-2(8)5-3(9)4(10)6(11)12-5;;;/h2*2,5,7-8,10-11H,1H2;;2*1H2/q;;+2;;/p-2/t2*2-,5+;;;/m00.../s1 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = FWGHSAZDJGAESH-FWCDDDAWSA-L | PubChem = 21967 | SMILES = [Ca+2].O=C1C(\O)=C(\[O-])O[C@@H]1[C@@H](O)CO.O=C1C(\O)=C(\[O-])O[C@@H]1[C@@H](O)CO.O.O }} |Section2={{Chembox Properties | C=12 | H=14 | Ca=1 | O=12 | Formula=Ca(C<sub>6</sub>H<sub>7</sub>O<sub>6</sub>)<sub>2</sub> | Appearance = | Density = | MeltingPt = | BoilingPt = | Solubility = About 50 g/100 mL<ref name="pharmacopeia">{{cite web |title=Reference Tables: Description and Solubility - C |url=http://www.pharmacopeia.cn/v29240/usp29nf24s0_alpha-2-12.html |access-date=2012-09-28 |archive-url=https://web.archive.org/web/20150118103757/http://www.pharmacopeia.cn/v29240/usp29nf24s0_alpha-2-12.html |archive-date=2015-01-18 |url-status=dead }}</ref> | SolubleOther = Slightly soluble in alcohol; insoluble in ether<ref name="pharmacopeia" /> }} |Section3={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }}

'''Calcium ascorbate''' is a compound with the molecular formula CaC<sub>12</sub>H<sub>14</sub>O<sub>12</sub>. 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&nbsp;302. It is approved for use as a food in the EU,<ref>UK Food Standards Agency: {{cite web |url=http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist |title=Current EU approved additives and their E Numbers |accessdate=2011-10-27}}</ref> USA<ref>US Food and Drug Administration: {{cite web|url=https://www.fda.gov/Food/FoodIngredientsPackaging/FoodAdditives/FoodAdditiveListings/ucm091048.htm |title=Listing of Food Additives Status Part I |website=Food and Drug Administration |accessdate=2011-10-27 |url-status=dead |archiveurl=https://web.archive.org/web/20130314104055/https://www.fda.gov/Food/FoodIngredientsPackaging/FoodAdditives/FoodAdditiveListings/ucm091048.htm |archivedate=2013-03-14 }}</ref> and Australia and New Zealand.<ref>Australia New Zealand Food Standards Code {{cite web |url=http://www.comlaw.gov.au/Details/F2011C00827 |title=Standard 1.2.4 - Labelling of ingredients |date=8 September 2011 |accessdate=2011-10-27}}</ref>

== References == {{Reflist}}

{{DEFAULTSORT:Calcium Ascorbate}} Category:Ascorbates Category:Calcium compounds Category:Vitamers Category:Vitamin C Category:E-number additives