L-Tartaric Acid
CAS No.: 87-69-4
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
(Executive Standard: GB 25544-2010,also meets the international standards of FCC,BP,USP ect.)
(Executive Standard: GB 25544-2010,also meets the international standards of FCC,BP,USP ect.)
Assay(after drying, as C4H6O6): 99.87-100.5%
Specific Rotation
: +12
~ +13
: +12~ +13Arsenic [as As]: 2mg/kg Max
Lead [Pb]: 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 Kraft/Plastic Bag lined with PE bag, 20MT/20FCL (on pallet).
STORAGE
Kept air tightly in a light-proof, dry and cool place.