Tags: Chemical Compound, Chemical Substance.
Tetrachloroethylene also known under the systematic name tetrachloroethene or perchloroethylene (perc or PERC) and many other names is a chlorocarbon with the formula Cl2C=CCl2. It is a colorless liquid widely used for dry cleaning of fabrics hence it is sometimes called dry-cleaning fluid. It has a sweet odor detectable by most people at a concentration of 1 part per million (1 ppm). Worldwide production was about one million metric tons in 1985.
