Appearance:White crystals            
Assay：99.88%            
Specific Rotation：+12.25°            
Lead：0.0002％ max            
Arsenic：0.0002％ max            
Residue On ignition：0.032％            
Loss On Drying：0.16%            
Sulfate：0.015％ max            
Oxalate：0.035％ max            
Packing：Drum            
Applications:Mainly as a sour agent, resolving agents and pharmaceutical raw materials
Molecule Structure: