Items
Specification
Appearance
White crystalline powder
Identification
Positive
Color and clarity of solution
Meet the requirement
PH
3.5-5.0
Related substance
Total impurities: 2.0%max
Melting point
150 -153℃
Specific rotation
+75°~ +78°
Loss on drying
0.5%max
Sulfate ash
0.1%max
Chloride
Residue on ignition
Assay
99.0%min