|
Appearance
|
White crystalline powder
|
|
Assay
|
Min 99.5%
|
|
Insoluble matter
|
Max 0.005%
|
|
Chloride (Cl)
|
Max 0.0005%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Total nitrogen (N)
|
Max 0.001%
|
|
Reaction against H2SO4
|
Passes test
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Calcium (Ca)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.0002%
|
|
Residue on ignition (at 800°C)
|
Max 0.01%
|