Potassium nitrate is� an inorganic salt with a chemical formula of KNO3. It is a natural source of nitrate and has been used as a constituent for several different purposes, including food preservatives, fertilizers, tree stump removal, rocket propellants, and fireworks. We can supply more than 500 MT every month and our Port will be FOB Mundra Port, India. Appearance - White Crystals Odour - Odourless Solubility - 36 gm / 100 ml of water Specific Gravity - 2.1 pH - Ca.7 Boiling Point - 400 C ( 752 F ) Melting Point - 333 C ( 631 F ) Vapour Density ( air = 1 ) - 3.00 Vapour Pressure ( mm Hg ) - Negligible @ 20 C