Appearance
White crystalline powder
Specific rotation(a)D20
(C=5 H2O)
-11.0 to -12.0º
Chloride(C1)
Not more than 0.02%
Ammonium(NH4)
Not more than 0.02%
Sulfate(SO4)
Not more than 0.02%
Heavy metals(Pb)
Not more than 10ppm
Iron(Fe)
Not more than 10ppm
Arsenic(As2O3)
Not more than 1 PPM
Loss on drying
Not more than 0.5%
Residue on ignition
Not more than 0.1%
Assay
99.0-101.0%