|
Test item
|
Specification
|
|
|
Reagent grade
|
Pharmaceutical grade
|
|
|
Appearance
|
Conform
|
Conform
|
|
Assay /%
|
≥99.5
|
≥99.0
|
|
Water insoluble /%
|
≤0.005
|
≤0.02
|
|
Chloride (Cl)/%
|
≤0.001
|
≤0.005
|
|
Phosphate (PO4)/%
|
≤0.0005
|
≤0.002
|
|
Manganese (Mn)/%
|
≤0.05
|
|
|
Ferric (Fe)/%
|
≤0.01
|
≤0.02
|
|
Copper (Cu)/%
|
≤0.002
|
≤0.01
|
|
Zinc (Zn)/%
|
≤0.005
|
≤0.02
|
|
Lead (Pb)/%
|
≤0.002
|
≤0.004
|
|
SO4/%
|
≤0.1
|
≤0.2
|
