· Tetrachloroethylen, also known as perchloroethylen, is an organic compound with the formula C2Cl4 and is a colorless liquid.
Tetrachloroethylen is widely used, mainly as an organic solvent, dry cleaning agent, metal degreasing solvent, and also as an insect repellent. Tetrachloroethylen can be used as fat extractant, fire extinguishing agent and smoke screen agent, etc., and can also be used to synthesize trichloroethylen and fluorinated organic compounds.