|
Appearance
|
White crystalline powder
|
|
Assay (by KMnO4 titration)
|
Min 98.0%
|
|
Insoluble matter in water
|
Max 0.005%
|
|
Titrable free acid
|
Max 0.04 meq/g
|
|
Chloride & chlorates (as Cl)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.005%
|
|
Manganese (Mn)
|
Max 0.00005%
|
|
Residue on ignition (as SO4)
|
Max 0.05%
|