|
Appearance
|
White powder
|
|
Assay (complexometric)
|
Min 99%
|
|
Substance insoluble in dilute H2SO4
|
Max 0.01%
|
|
Free alkali
|
Passes test
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Total nitrogen (N)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.002%
|
|
Copper (Cu)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Manganese (Mn)
|
Max 0.0005%
|
|
Cadmium (Cd)
|
Max 0.0005%
|
|
Arsenic (As)
|
Max 0.0001%
|
|
Calcium (Ca)
|
Max 0.001%
|
|
Sodium (Na)
|
Max 0.001%
|
|
Substance reducing KMnO4 (as O)
|
Max 0.0008%
|