Sodium nitrate 99%min 1)MF: NaNO3 2)Purity: 99.7% 3)Grade: Industrial Grade Sodium Nitrate:White or slight ... .WITH THE REFERENCE OF HG/T23272004 CHINESE NATIONAL STANDARDS, PURITY 99.4% min Insoluble in water 0.04% max Chloride content (as ... , glass, pigment, match and preserving food etc. Sodium Nitrate NaNO3 99%min