IUPAC Name: 1,1,2,2-tetrachloroethene

MCL: 0.005 ppm

Source: Formerly used as a pesticide, it is used as a solvent, degreaser, an intermediate in organic synthesis, and is an important chemical in dry-cleaning.

Summary: Tetrachloroethylene is an organic compound used in dry-cleaning and degreasing. It is used in cleaning as it acts as a solvent, and it may be used as an intermediate in producing fluorocarbons. It had former use as a pesticide. It exists as a colorless liquid at room temperature and is soluble in water up to 206 mg/L at 25 C. It has a density of 1.6230 g/mL at 20 C. Tetrachloroethylene is classified by the EPA as a Hazardous Air Pollutant (HAPs). It exists in the atmosphere as a vapor and will undergo photodegradation reactions with a half-life of 96 days. Koc values ranging from 200 – 237 indicate moderate mobility within soil. Photolyis and volatilization are expected to be major fate processes in soil and water. Full degradation produces ethene and hydrogen chloride, while partial degradation produces trichloroethylene, cis-1,2-dichloroethene and vinyl chloride.

GHS Hazard: H305, H313, H314, H315, H317, H319, H320, H332, H336, H350, H351, H362, H370, H372, H373, H411, GHS05, GHS07, GHS08, GHS09