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

Assay (as C4H6O5)

 99.0%

Optical purity
(e.e%,Chiral HPLC)

 98.0% Min
Specific Rotation (c=8.5,H2O) +1.6°～+2.6°
Heavy Metals (as Pb) 20mg/kg Max
Residue on Ignition 0.1%Max
Fumaric Acid 0.5%Max
Maleic Acid 0.05%Max
Chloride[Cl-] 0.01% Max
Sulfate 0.04% Max
Arsenic (as As2O3) 2.0mg/kg 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.