Calcium ascorbate

Calcium ascorbate

IUPAC name calcium (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2H-furan-3-olate
Other names Calcium diascorbate; Calcium L-ascorbate; Hemicalcium ascorbate; Calci-C; E302
Identifiers
CAS number	5743-27-1^N
PubChem	21967
ChemSpider	4445637^Y
Jmol-3D images	Image 1
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
InChI InChI=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^Y Key: FWGHSAZDJGAESH-FWCDDDAWSA-L^Y 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 Key: FWGHSAZDJGAESH-ORZGFQGYBD
Properties
Molecular formula	C₁₂H₁₄CaO₁₂
Molar mass	390.31 g mol⁻¹
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

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

As a food additive, it has the E number E302. It is approved for use as a food additive in the EU^[1], USA ^[2] and Australia and New Zealand.^[3] Among its many uses is to keep apples fresh, so they do not turn brown quickly. This process arose out of a Cooperative Research and Development Agreement with the USDA and Mantrose Haeuser, a U.S specialty coatings manufacturer, who hold a joint patent covering the application of calcium ascorbate to maintain shelflife in fresh-cut fruit and vegetables.^[4]

References

^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist. Retrieved 2011-10-27.
^ US Food and Drug Administration: "Listing of Food Additives Status Part I". http://www.fda.gov/Food/FoodIngredientsPackaging/FoodAdditives/FoodAdditiveListings/ucm091048.htm. Retrieved 2011-10-27.
^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". http://www.comlaw.gov.au/Details/F2011C00827. Retrieved 2011-10-27.
^ US 5939117