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D(-)TARTARIC ACID
   Molecular formula: C4H6O6
Molecular Weight: 150.1
Chemical name (+)-Dihydroxy succinic acid; L(+)-2,3-dihydroxy butanedioic acid
Functional use:Acidity regulator
Character: Colorless, without smell, crystal, or white powder, with strong smell, left hand, lustrous; Specific gravity is D204=1.76; It is soluble in water,alcohol,and diethyl ether.

Description: Colorless crystals or white powder without odor,with sour taste,stable in air,compound of equal quantity of dextro-rotatory and levo-rotatory tartaric acid,containing one or two molecule crystalline water and losing water when heated to 100°C,specific gravity 1.697.
UsesL(+)-Tartaric acid is widely used as acidulant in beverage,and other foods, such as soft drinks, wine, candy, bread and some colloidal sweetmeats. With its optical activity, L(+)-Tartaric acid is used as chemical resolving agent to resolve DL-amino-butanol, an intermediate for antitubercular drug. And it is used as chiral pool to synthesize tartarate derivatives. With its acidity, it is used as catalyst in the resin finishing of polyester fabric or pH value regulator in oryzanol production. With its complexation, L(+)-Tartaric acid is used in electroplating, sulfur removal and acid pickling. It is also used as complexing agent, screening agent or chelating agent in chemical analysis and pharmaceutical inspection, or as resist agent in dyeing. With its reduction, it is used as reductive agent in manufacturing mirror chemically or imaging agent in photography. It can also complex with metal ion and can be used as cleaning agent or polishing agent of metal surface.
Specifications:
Item Index
Apperance:White crystals powder
Specific Rotation [alpha/20/D]:-12.0 to -12.5
Loss on drying:Not more than 0.5%
Residue on lenition:Not more than 0.1%
Heavy Metals (pb):Not more than 0.001%
Oxalate:Under Limit
Assay:Not less than 99%
Packing: 25kg paperboard drum

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