Test item
|
Specification
|
|
|
Reagent grade
|
Pharmaceutical grade
|
Appearance grade
|
Conform
|
Conform
|
Assay [FeCl3] /%
|
≥99.0
|
≥98.0
|
Water insoluble/%
|
≤0.01
|
≤0.05
|
Free acid(HCl)/%
|
≤0.1
|
≤0.1
|
Sulfate (SO4)/%
|
≤0.01
|
≤0.03
|
Nitrate(NO3)/%
|
≤0.01
|
≤0.03
|
Phosphate(PO4)/%
|
≤0.01
|
≤0.03
|
Manganese(Mn) /%
|
≤0.02
|
-
|
Ferroporphyrin (Fe2+)/%
|
≤0.002
|
≤0.005
|
Copper (Cu) /%
|
≤0.005
|
≤0.01
|
Zinc (Zn) /%
|
≤0.003
|
≤0.01
|
Arsenic (As) /%
|
≤0.002
|
≤0.01
|
Ammonia not sediment/%
|
≤0.1
|
≤0.5
|