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Tetrachloroethylene - CAS # 127-18-4. Information provided on Tetrachloroethylene (127-18-4) is for reference only and is subject to change. There is no warranty of accuracy or completeness of any information contained herein.
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 has a sweet odor detectable by most people at a concentration of 1 part per million (1 ppm).