It is a non-flammable, colourless liquid at room temperature that easily evaporates into the air. PERC has an odour that many people associate with dry cleaning. Tetrachloroethylene is also known as ethylene tetrachloride, PCE, perc, perchlor, perchlorethylene, perchloroethylene, perk, tetrachloroethene, tetrachlorethylene, 1,1,2,2-tetrachloroethylene.
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