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D(+)-Malic Acid

CAS NO.636-61-3

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.