|
Test item
|
Specification
|
|
|
Reagent grade
|
Pharmaceutical grade
|
|
|
Appearance
|
Conform
|
Conform
|
|
Assay /%
|
≥98.5
|
≥98.0
|
|
Clarify degrees test
|
Conform
|
Conform
|
|
Water in soluble /%
|
≤0.005
|
≤0.01
|
|
Chloride (Cl)/%
|
≤0.0005
|
≤0.004
|
|
Sulfur compounds (SO4)/%
|
≤0.005
|
≤0.01
|
|
Nitrate (NO3)/%
|
≤0.0005
|
≤0.001
|
|
Ferric (Fe)/%
|
≤0.0005
|
≤0.002
|
|
Arsenic (As) /%
|
≤0.0005
|
≤0.002
|
|
Heavy metal (Pb)/%
|
≤0.0005
|
≤0.001
|
|
Alkali /%
|
≤0.1
|
≤0.2
|
