Appearance white crystals or crystalline powder
State of solution Not less than 98%
Specific Rotation -14.5o- -15.5o
Assay 99.0%-101.0%
Transmittance ≥95 %
Loss on drying ≤0.25%
Residue on Ignition ≤0.10%
Heavy Metals(Pb) ≤10ppm
PH 5.2-6.2
Chloride ( Cl) ≤0.02%
Sulfate (SO4) ≤0.02%
Iron( Fe) ≤10ppm
Ammonium(NH4) ≤0.02%