Ferrous Sulphate Dried IP/BP. ANALYSIS LIMIT VALUE Solubility Dissolve slowly but completely freshly boiling water and cooled water. IDENTIDICATION Reaction Ferrous salts and Reactions of Sulphates. Copper Max 50 ppm Lead Max 10 ppm Zinc Max 300 ppm Manganese Max 01 % Arsenic Max 3 ppm Basic Sulphate Not more than faintly turbid Insoluble Substance 0.05% Assay 86.0% to 90.0%
