D(+)-MALIC ACID
SYNONYM: R-HYDROXY BUTANEDIOIC ACID
FORMULA: C4H6O5
M. W. : 134.09
CAS NO.: 636-61-3
DESCRIPTION: WHITE CRYSTALS OR WHITE CRYSTALLINE POWDER, SOLUBLE
IN WATER, ALCOHOL AND OTHER ORGANIC SOLVENTS. ITS AQUEOUS SOLUTION IS ACIDIC.
SPECIFICATIONS:
|
ASSAY |
99.0% MIN |
|
OPTICAL PURITY (CHIRAL
HPLC) |
98.0% MIN |
|
SPECIFIC ROTATION |
+1.6°-+2.6° |
|
ARSENIC (As2O3) |
2.0mg/kg MAX |
|
HEAVY METALS (Pb) |
20mg/kg MAX |
|
RESIDUE ON IGNITION |
0.1% MAX |
|
CHLORIDE (Cl-) |
0.01% MAX |
|
SULFATE (SO42-) |
0.04% MAX |
|
FUMARIC ACID |
0.5% MAX |
|
MALEIC ACID |
0.05% MAX |
USES: IT’S 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
IN CARDBOARD DRUM