Description White crystalline powder
Identification Meets the requirements
Assay ,% min 98.5~101.0
pH value 5.0～7.0
Specific Rotation [a] D20° +24.5o~ +26.8o
State of solution，% min 98.0
Loss on drying,% max 0.30
Residue on ignition,% max 0.10
Chloride (as Cl),% max 0.02
Sulphate(as SO4),% max 0.02
Heay metals (as Pb),% max 0.001
Iron (as Fe) , % max 0.001
Ammonium (as NH4) ,% max 0.02
Arsenic (as As),% max 0.0001
