DESCRIPTION

white crystals or white crystalline powder, soluble in water, alcohol and other organic solvent. Its aqueous solution is acidic.

Chemical Name

R-hydroxy butanedioic acid

Molecular Formula

C₄H₆O₅

Structural Formula

Molecular Weight

134.09

SPECIFICATION
(FCCIV,1996)

Assay(as C₄H₆O₅)

99.0%~100.5%

Optical purity

(e.e%,Chiral HPLC)

98.0% Min

Specific Rotation (c=8.5,H₂O)

+1.6~+2.6

Arsenic(As₂O₃)

2.0mg/kg Max

Heavy Metal(Pb)

20mg/kg Max

Residue On Ignition

0.1% Max

Chloride[Cl-]

0.01% Max

Sulfate

0.04% Max

Fumaric Acid

0.5% Max

Maleic Acid

0.05% Max

MAIN FUNCTION AND PURPOSE

It is an important four-carbon atoms chiral pool. It is mainly used in many fields including chiral pharmaceuticals, chiral additives and chiral auxiliaries. It is used as chiral pool of chiral synthesis in pharmaceutical and food industries. As an optically active organic acid, it is insubstitutable in asymmetry synthesis of some chiral compounds.

PACKING

25kg net weight in cardboard drum or according to customer requirements

STORAGE

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