CAS Number: 79-34-5. A pale to yellowish liquid with a pungent,
chloroform-like odor. Previously used in large amounts to produce
trichloroethylene, tetrachloroethylene, and 1,2-Dichloroethylene.
Also used as a solvent, in cleaning and degreasing metals, in
paint removers, varnishes and lacquers, in photographic films, as
an extractant for oils and fats, and in pesticides. Chemical
formula = C2H2Cl4. Molecular weight = 167.85 g/mol.