CAS No.127-18-4 Attribute Details Chemical Name Tetrachloroethylene CAS Number 127-18-4 Synonyms Perchloroethylene; Tet; PCE; Perc Molecular Formula C2Cl4 Molecular Weight 165.83 g/mol Appearance Colorless liquid with a sweet odor Density 1.6226 g/mL at 25 °C Melting Poi…