|
Appearance
|
White crystalline powder
|
|
Assay
|
Min 99.0%
|
|
Substance insoluble in HCl
|
Max 0.01%
|
|
Substance soluble in water
|
Max 0.05%
|
|
Chloride (Cl)
|
Max 0.05%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Arsenic (As)
|
Max 0.03%
|
|
Calcium (Ca)
|
Max 0.002%
|
|
Copper (Cu)
|
Max 0.002%
|
|
Iron (Fe)
|
Max 0.003%
|
|
Potassium (K)
|
Max 0.002%
|
|
Sodium (Na)
|
Max 0.002%
|
|
Lead (Pb)
|
Max 0.025%
|