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L(+)-Tartaric Acid
CAS NO.:87-69-4
Standard: GB 25544-2010,FCC,BP,USP
Name:L(+)-Tartaric Acid
Function:

DESCRIPTION

Colorless or translucent crystals, or a white, fine granular, crystalline powder. It is odorless, has an acid taste, and is stable in air.

Chemical Name

L-2,3-dihydroxy butanedioic acid

Molecular Formula

C4H6O6

Structural Formula

Molecular Weight

150.09

SPECIFICATION
(Standard: GB 25544-2010, FCC,BP,USP)

Assay(after drying, as

C4H6O6)

99.7%~100.5%

Specific Rotation

+12~ +13

Arsenic [as As]

2mg/kg Max

Lead [Ph]

2mg/kg Max

Residue on Ignition

0.05% Max

Residue on Drying

0.5% Max

Oxalate test

Qualified

Sulfate test

Qualified

MAIN FUNCTION AND PURPOSE

L(+)-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 tartrate 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.

PACKING

25KG net in Kratf/Plastic Bag lined with PE bag, 20MT/20FCL (on pallet).

STORAGE

Kept airtightly in a light-proof, dry and cool place.



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