Calcium ascorbate

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.

Calcium ascorbate

Names
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; E 302
Identifiers
CAS Number	5743-27-1 Y
3D model (JSmol)	Interactive image
ChemSpider	4445637 Y
ECHA InfoCard	100.126.521
E number	E302 (antioxidants, ...)
PubChem CID	21967
UNII	J96U0ZD4Y6 Y
CompTox Dashboard (EPA)	DTXSID3047687
InChI InChI=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 Y Key: FWGHSAZDJGAESH-FWCDDDAWSA-L Y 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 Key: FWGHSAZDJGAESH-ORZGFQGYBD
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
Properties
Chemical formula	Ca(C6H7O6)2
Molar mass	390.310 g·mol−1
Solubility in water	About 50 g/100 mL[1]
Solubility	Slightly soluble in alcohol; insoluble in ether[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

As a food additive, it has the E number E 302. It is approved for use as a food in the EU,^[2] USA^[3] and Australia and New Zealand.^[4]