A colourless salt solid which is commonly found within propellants such as fireworks, sparklers and shotgun cartridge caps. In the past Potassium Perchlorate has been used as solid rocket fuel, although has now been predominantly replaced with the more powerful ammonium perchlorate.
The main industry in which Potassium Perchlorate is used in is the pyrotechnic industry. It is classed as an oxidiser and used in a range of pyrotechnic products such as whistles and waterfalls. It can help produce a high temperature flame and is referred to within the industry as a safer replacement to potassium chlorate.