D(-)-Tartaric Acid
CAS NO.:147-71-7
Agent Grade
DESCRIPTION
 White crystalline powder or white crystal
Chemical Name 2S,3S-Dihydroxy Succinic acid
Molecular Formula C4H6O6
Structural Formula
Molecular Weight 150.09

SPECIFICATION
Agent Grade

Assay (as C4H6O6)

 99.0% Min
Specific Rotation -11.8° ～-12.8°
Heavy Metals (as Pb) 10mg/kg Max
Residue on Ignition 0.1%Max
Sulfate Qualified
Loss on Drying 0.5%Max
Melting Point

166℃～172℃
Arsenic (as As2O3) 3mg/kg Max

MAIN FUNCTION AND PURPOSE

D(-)-tartaric acid is an important chiral pool of 4 carbon atoms. With the rapid development of chiral pharmaceuticals, chiral additives and chiral auxiliaries, D(-)-tartaric acid is more and more widely used in pharmaceuticals and food industry. It is also used as chiral pool or resolving agent for chiral synthesis.
When D(-)-tartaric acid or its derivatives is used to resolve amino acid, it has some advantages such as high reaction speed, high resolution ratio, and during the period of resolution, the dynamic process can be controlled and can oblige the amino acid to transform to the target configuration. So the yield always reaches 80%. Furthermore, D(-)-tartaric acid is easy to retrieve after resolution. The optical purity of the product is high and e.e% value can reach 99.9%.
In addition, D(-)-tartaric acid has also been widely used in synthesizing and manufacturing many kinds of chiral food additives including the resolution of a new functional nutriment -- L-carnitine, and some chiral pharmaceuticals.
PACKING
 25kg net weight in Cardboard Drum or according to customer requirements
STORAGE

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