... .1% maximumIron (Fe): 0.005% maximumProperties: It is white crystal, rhombus crystal and white tiny powderEasily soluble in water and aqueous ammonia ... etherUsage: it is mostly used in manufacturing nitro-compound, potassium nitrate, azo dyestuff, dye mordant in textile coloration, bleaching agent, metal ... heat treatment auxiliary agent, and antiseptic in pharmaceutical industry Sodium Nitrate 99%