... , easily soluble ,low heavy metal, ISO9001 certified supplier Potassium nitrate is white crystal or prill product, easily soluble ,low heavy ... metal, ISO9001 certified supplier Potassium nitrate MF: KNO3 MW: 101.1 CAS NUMBER: 7757-79- ... 1Properties and applications:Potassium Nitrate is colorless crystal or white powder. It is easily soluble ...