|
Appearance
|
White hygroscopic crystalline powder
|
|
Assay
|
Min 99.0%
|
|
Insoluble matter
|
Max 0.003%
|
|
Non-volatile matter
|
Max 0.005%
|
|
Chloride (Cl)
|
Max 0.0002%
|
|
Phosphate (PO4)
|
Max 0.001%
|
|
Silicate (SiO2)
|
Max 0.005%
|
|
Sulphate (SO4)
|
Max 0.002%
|
|
Sulphide (S)
|
Max 0.0002%
|
|
Arsenic (As)
|
Max 0.00004%
|
|
Calcium (Ca)
|
Max 0.002%
|
|
Copper (Cu)
|
Max 0.0002%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.0002%
|
|
Magnesium (Mg)
|
Max 0.002%
|
|
Potassium (K)
|
Max 0.002%
|
|
Sodium (Na)
|
Max 0.005%
|