Specific rotation[a]D20°

+20.7°~+21.4°

State of solution

Clear and colorless

(Tranamittance)

≥98.0%

Chloride(Cl)

19.12 to 19.51%

Ammonium(NH4)                    

≤0.02%

Sulfate(SO4)                            

≤0.020%

Iron(Fe)                             

≤10PPm

Heavy metals(Pb)                   

≤10PPm

Arsenic(As2O3)                     

≤1PPm

Other amio acids

Chromatographically not detectable

Loss on drying                      

≤0.40%

Residue on ignition (Sulfated)                           

≤0.10%

Assay                                  

99.0～100.5%