|
Appearance
|
White crystalline powder
|
|
Assay (argentometric)
|
98 - 100.5%
|
|
pH (5% solution in water at 25°C)
|
5.0 to 8.8
|
|
Bromate (BrO3)
|
Max 0.005%
|
|
Chloride (Cl)
|
Max 0.5%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Barium (Ba)
|
Max 0.005%
|
|
Iron (Fe)
|
Max 0.002%
|
|
Magnesium and alkali earth metals
|
Max 0.02%
|
|
Loss on drying (at 105°C)
|
Max 3%
|