1.0 2010-04-08 22:07:31 UTC 2025-11-18 23:04:25 UTC FDB007243 Calcium tartrate Calcium tartrate is also known as mn(iii) tartrate or tartaric acid, calcium salt, (r-r*,r*)-isomer. Calcium tartrate is soluble (in water) and a moderately acidic compound (based on its pKa). Calcium tartrate can be found in tamarind, which makes calcium tartrate a potential biomarker for the consumption of this food product. Calcium tartrate is a byproduct of the wine industry, prepared from wine fermentation dregs. It is the calcium salt of tartaric acid, an acid most commonly found in grapes. Its solubility decreases with lower temperature, which results in the forming of whitish (in red wine often reddish) crystalline clusters as it precipitates. 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 . C4H4CaO6 188.148 187.9633787 calcium 2,3-dihydroxybutanedioate calcium tartrate [Ca++].OC(C(O)C([O-])=O)C([O-])=O InChI=1S/C4H6O6.Ca/c5-1(3(7)8)2(6)4(9)10;/h1-2,5-6H,(H,7,8)(H,9,10);/q;+2/p-2 GUPPESBEIQALOS-UHFFFAOYSA-L belongs to the class of organic compounds known as beta hydroxy acids and derivatives. Beta hydroxy acids and derivatives are compounds containing a carboxylic acid substituted with a hydroxyl group on the C3 carbon atom. Beta hydroxy acids and derivatives Organic compounds Organic acids and derivatives Hydroxy acids and derivatives Beta hydroxy acids and derivatives Aliphatic acyclic compounds 1,2-diols Carbonyl compounds Carboxylic acid salts Carboxylic acids Dicarboxylic acids and derivatives Fatty acids and conjugates Hydrocarbon derivatives Monosaccharides Organic calcium salts Organic oxides Secondary alcohols Short-chain hydroxy acids and derivatives 1,2-diol Alcohol Aliphatic acyclic compound Beta-hydroxy acid Carbonyl group Carboxylic acid Carboxylic acid derivative Carboxylic acid salt Dicarboxylic acid or derivatives Fatty acid Hydrocarbon derivative Monosaccharide Organic calcium salt Organic oxide Organic oxygen compound Organic salt Organooxygen compound Secondary alcohol Short-chain hydroxy acid logp -0.76 ALOGPS logs -0.23 ALOGPS solubility 1.44e+02 g/l ALOGPS logp -1.8 ChemAxon pka_strongest_acidic 2.72 ChemAxon pka_strongest_basic -4.3 ChemAxon iupac calcium 2,3-dihydroxybutanedioate ChemAxon average_mass 188.148 ChemAxon mono_mass 187.9633787 ChemAxon smiles [Ca++].OC(C(O)C([O-])=O)C([O-])=O ChemAxon formula C4H4CaO6 ChemAxon inchi InChI=1S/C4H6O6.Ca/c5-1(3(7)8)2(6)4(9)10;/h1-2,5-6H,(H,7,8)(H,9,10);/q;+2/p-2 ChemAxon inchikey GUPPESBEIQALOS-UHFFFAOYSA-L ChemAxon polar_surface_area 120.72 ChemAxon refractivity 47.89 ChemAxon polarizability 10.77 ChemAxon rotatable_bond_count 3 ChemAxon acceptor_count 6 ChemAxon donor_count 2 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 1286614 Specdb::MsMs 1286615 Specdb::MsMs 1286616 Specdb::MsMs 1401412 Specdb::MsMs 1401413 Specdb::MsMs 1401414 Tamarind Type 1 specific Tamarindus indica 58860