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Names | |
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IUPAC name
2,3-Dihydroxybutanedioic acid calcium salt
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.019.656 |
EC Number |
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E number | E354 (antioxidants, ...) |
PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
CaC4H4O6 | |
Molar mass | 190.16484 g/mol (anhydrous) 260.21 g/mol (tetrahydrate) |
Appearance | hygroscopic white powder or colorless crystals |
Density | 1.817 g/cm3 (tetrahydrate) |
Melting point | tetrahydrate decomposes at 160 °C anhydrous decomposes at 650 °C |
0.037 g/100 ml (0 °C) 0.2 g/100 ml (85 °C) | |
Structure | |
d or l rhombic dl triclinic | |
Hazards | |
Safety data sheet (SDS) | Calcium tartrate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium tartrate, exactly calcium L-tartrate, is a byproduct of the wine industry, prepared from wine fermentation dregs.[1][2][3] It is the calcium salt of L-tartaric acid, an acid most commonly found in grapes.[4] Its solubility decreases with lower temperature, which results in the forming of whitish (in red wine often reddish) crystalline clusters as it precipitates. As E number E354, it finds use as a food preservative and acidity regulator. Like tartaric acid, calcium tartrate has two asymmetric carbons, hence it has two chiral isomers and a non-chiral isomer (meso-form). Most calcium tartrate of biological origin is the chiral levorotatory (–) isomer.
References
- ^ Zoecklein, Bruce; Fugelsang, Kenneth C.; Gump, Barry H.; Nury, Fred S. (2013-11-09). Wine Analysis and Production. Springer Science & Business Media. p. 228. ISBN 978-1-4757-6967-8.
- ^ Roeber, Eugene Franz; Parmelee, Howard Coon (1915). Metallurgical & Chemical Engineering. Electrochemical Publishing Company. p. 616.
- ^ Ribéreau-Gayon, Pascal; Glories, Yves; Maujean, Alain; Dubourdieu, Denis (2006-05-01). Handbook of Enology, Volume 2: The Chemistry of Wine - Stabilization and Treatments. John Wiley & Sons. pp. 39–40. ISBN 978-0-470-01038-9.
- ^ "Calcium tartrate". InXight Drugs. National Center for Advancing Translational Sciences.