折射率  53 ° (C=0.3, H2O) 

Test Items                                         Standard 
Appearance                               White fine crystals 
Assay                                         98.0 to 101.0% 
Specific Rotation [20/D] °～° 
Melting point   
Chloride (Cl)                               Not more than 0.10% 
Heavy Metals (Pb)                      Not more than 10 PPM 
Loss on Drying                           Not more than 0.20% 
Residue on Ignition (Sulfate)    Not more than 0.20% 

危险品标志  Xn 
危险类别码  20/21/22-40 
安全说明  22-36/37/39