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Appearance
|
A white crystalline powder
|
|
Assay (on dried basis)
|
99 - 100.5%
|
|
Identity
|
Passes test
|
|
Appearance of solution
|
Passes test
|
|
Impurities with alkaline reaction
|
Passes test
|
|
Sulphate (SO4)
|
Max 0.01%
|
|
Iodate (as per BP, USP)
|
Passes test
|
|
Thiosulphate (S2O3)
|
Passes test
|
|
Thiosulphate and barium
|
Passes test
|
|
Total nitrogen (N)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.05%
|
|
Loss on drying (at 105°C)
|
Max 3%
|
|
Water (H2O)
|
Max 2%
|
|
Bromide & chloride (Cl)
|
Max 0.03%
|