Calcium ascorbate
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| Names
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| IUPAC name
Calcium (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2H-furan-3-olate
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| Other names
Calcium diascorbate; Calcium L-ascorbate; Hemicalcium ascorbate; Calci-C; E 302
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| Identifiers
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| ChemSpider
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| ECHA InfoCard
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100.126.521 
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| E number
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E302 (antioxidants, ...)
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| UNII
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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  YKey: FWGHSAZDJGAESH-FWCDDDAWSA-L YInChI=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
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[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
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| Properties
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Ca(C6H7O6)2
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| Molar mass
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390.310 g·mol−1
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About 50 g/100 mL[1]
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| Solubility
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Slightly soluble in alcohol; insoluble in ether[1]
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Chemical compound
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,[2] USA[3] and Australia and New Zealand.[4]
References
