... 99.2%Min CAS No.: 7778-74-7 / KClO4 Usage : pyrotechnics, paper, pulp process. Origin : Hunan, Dalian Potassium Perchlorate 99.2 ... under ordinary conditions. Hygroscopic.- ApplicationsPotassium Perchlorate is used in the pyrotechnics to give a bright light for illumination. It is a ...