Items

Specifications

Appearance

White crystalline powder

State of solution

(Transmittance)

Clear and colorless not less than 98.0%

Specific optical rotation

+31.5o ~ +32.5o

Assay ,%                min

99.0 ~ 100.5

Loss on drying,%         max

0.2

Heavy metals (as Pb)       max

10ppm

PH value (5% in water)

3.0~3.5

Residue on ignition,%      max

0.1

Chloride ,%(as Cl)      max

0.02

Sulfate(SO4),%(as SO4)  max

0.02

Iron(as Fe),           max

10ppm

Other amino acids

Accord with specifications

Arsenic(as As2O3),      max

1ppm

Ammonium(as NH4),%       max

0.02