Appearance: white or light yeloow crystals, odourless, mouth feel salty Assay: >99% Acid & alkali: complies Sulphate %: <0.03 Heavy metal %: <0.0005 Arsenic %: <0.0001 Ferric: <0.001 Oxalic %: <0.05 Sodium: complies Carbonizable substances: complies Chloride: <0.01