Items

Standard

Appearance

white crystals or crystalline powder

State of solution

Not less than 98.0%

Specific Rotation

（C=10,2N HCL）

 -14.5º--15.5º

Assay

99.0%-101.0%

Loss on drying

Not more than0.2%

Residue on Ignition

Not more than0.20%

Heavy Metals(Pb)

Not more than10ppm 

PH

5.2-6.2

Chloride ( Cl)

Not more than0.02%  

Sulfate (SO4)

Not more than0.02%

Iron( Fe)

Not more than10ppm  

Arsenic

Not more than 2ppm

Ammonium(NH4)

Not more than 0.02%

EE%

Not less than 99.0%