Physical properties: 1) Formula: KNO3 2) CAS NO.: 14797-55-8 3) Synonym: Nitric acid,potassium salt, Saltpeter 4) Storage: Should save coolly in dry place, may not and the organic matter. Usage: KNO3 is used raw material to make black powder, front line, blaze and some other things. In pottery and porcelain industry it can be used in making color ceramic glaze; Also it is used in making medicine such as penicillin sylvine and rifampicin. It can be used as mill run medicament. Edible KNO3 can be used as chromogen and preservatives in meat food. Specification: Purity (KNO3-),%: 99.53 Water content (H2O),%: 0.06 Chloride content (based on Cl),%: 0.009 Insoluble substance in water,%: 0.007 Sulfate content (based on SO42),%: 0.005 Particle size: 2-4mm Our company is a professional chemical company which is one of the biggest manufacture factory produce chemical materials in the north of china. We are doing business on chemical product such as Caustic soda and Calcium carbide in all over the world.