Sodium nitrate 1)MF: NaNO3 2)Purity: 99% min 3)Grade: Industrial Grade Appearance:White or slight yellow ... . WITH THE REFERENCE OF HG/T23272004 CHINESE NATIONAL STANDARDS, PURITY 99% min Insoluble in water 0.06% max Chloride content (as ... , medicine, gunpowder, explosive, glass, pigment, match and preserving food etc. 99%High quality Sodium Nitrate