Potassium nitrate, molecular formula KNO3,CAS No: 7757-79-1, purity: 99%MIN, chloride: 0.1%MAX, maximum moisture content 0.3% melting point: 334,boiling point (boiling point): 400density: 2.11appearance: colorless transparent rhombohedral or rhombohedral particles or white powder. Soluble in water, soluble in glycerol, insoluble in anhydrous ethanol and ether. Uses: used in the manufacture of fireworks, gunpowder, matches, medicine, and glass industry.