"Perchlorethylene"@en . . . . "Ethene, tetrachloro-"@en . "Tetrachloroethylene"@en . "Tetrachlorethylene"@en . "Tetrachloroethene"@en . . "C0039637" . "D013750" . . "Tetrachloroethylene"@en . . "Perchloroethylene"@en .