SPECIFICATIONS Descriptions: Thin, dark red, transparent scales or a granular powder Taste, astringent Deliquescent in moist air Solubility: Soluble in 0.5 part of water, almost soluble in alcohol (95%) Identification: (A) Gives reactions to ferric salts & (B) Gives reaction of citrates Arsenic: NMT 4ppm Lead: NMT 30ppm Zinc: NMT 50ppm Chloride: NMT 0.25% Sulphate: NMT 0.3% Assay: 20.5% - 22.5% of Fe