|
Appearance
|
White deliquescent powder
|
|
Assay
|
98.5 - 101%
|
|
pH (5% solution)
|
6.0 - 7.5
|
|
Insoluble matter in water
|
Max 0.005%
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Oxalate (as C2H2O4)
|
Max 0.01%
|
|
Sulphate (SO4)
|
Max 0.005%
|
|
Copper (Cu)
|
Max 0.0001%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.003%
|
|
Sodium (Na)
|
Max 0.004%
|
|
Readily carbonisable substance
|
Passes test
|
|
Reducing substance
|
Passes test
|