|
Appearance
|
White hygroscopic crystalline powder
|
|
Insoluble matter
|
Max 0.01%
|
|
Loss on drying (at 300°C)
|
Max 2.0%
|
|
Chloride (Cl)
|
Max 0.002%
|
|
Nitrate (NO3)
|
Max 0.002%
|
|
Phosphate (PO4)
|
Max 0.001%
|
|
Silicate (SiO2)
|
Max 0.0025%
|
|
Sulphate (SO4)
|
Max 0.003%
|
|
Arsenic (As)
|
Max 0.00004%
|
|
Calcium (Ca)
|
Max 0.005%
|
|
Copper (Cu)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.001%
|
|
Magnesium (Mg)
|
Max 0.005%
|