|
Appearance
|
White to light yellow hygroscopic crystalline powder
|
|
Assay (oxidimetric)
|
Min 95.0%
|
|
Insoluble matter in water
|
Max 0.05%
|
|
Chloride (Cl)
|
Max 0.03%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Heavy metal (as Pb)
|
Max 0.005%
|
|
Calcium (Ca)
|
Max 0.05%
|
|
Iron (Fe)
|
Max 0.002%
|