Calcium ascorbate: Difference between revisions
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| 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 |accessdate=2012-sep-28}}</ref> |
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| SolubleOther = "slightly soluble in alcohol; insoluble in ether"<ref name="pharmacopeia" /> |
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Revision as of 21:09, 28 September 2012
This article needs additional citations for verification. (August 2010) |
{{Chembox | Verifiedfields = changed | verifiedrevid = 476993180 | ImageFile = Calcium ascorbate.png | 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 = ! colspan=2 style="background: #f8eaba; text-align: center;" |Identifiers
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| ECHA InfoCard | 100.126.521 |-
| E number | E302 (antioxidants, ...)
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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.../s1Key: FWGHSAZDJGAESH-FWCDDDAWSA-L
- 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.../s1Key: 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
|- | Section2 = ! colspan=2 style="background: #f8eaba; text-align: center;" |Properties
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| C12H14CaO12
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| 390.310 g·mol−1
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| about 50 g/100 mL[1] |-
| Solubility | "slightly soluble in alcohol; insoluble in ether"[1] |-
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 E 302. It is approved for use as a food additive in the EU[2], USA[3] and Australia and New Zealand.[4] 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.[5]
References
- ^ a b "Reference Tables: Description and Solubility - C". Retrieved 2012-sep-28.
{{cite web}}
: Check date values in:|accessdate=
(help) - ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
- ^ US Food and Drug Administration: "Listing of Food Additives Status Part I". Retrieved 2011-10-27.
- ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27.
- ^ US 5939117