Item | Quality Standards | ||||||||
Characters | White or almost white, crystalline powder or granular | ||||||||
Identification | Pass test | ||||||||
Appearance of solution | Pass test | ||||||||
Assay | 99.0%~100.5% | ||||||||
Water | 11.0%~13.0% | ||||||||
Readily carbonisable substances | Pass test | ||||||||
Acidity or alkalinity | Pass test | ||||||||
PH (5%w/v) | 7.5~9.0 | ||||||||
Sulfate | ≤150 mg/kg | ||||||||
Oxalate | ≤100 mg/kg | ||||||||
Chloride | ≤50 mg/kg | ||||||||
Lead | ≤1 mg/kg | ||||||||
Arsenic | ≤1 mg/kg | ||||||||
Mercury | ≤1 mg/kg | ||||||||
Heavy metal (as Pb) | ≤10 mg/kg | ||||||||
Tartrate | Pass test | ||||||||
Pyrogen | Pass test | ||||||||
Bacteria Endotoxins | Pass test |