A dichlorodifluoroethylene (systematically named dichlorodifluoroethene) is one of three compounds with the chemical formula C2Cl2F2.

Dichlorodifluoroethylenes are colourless gases, and are some of the simplest chlorodifluoroalkenes.

The structural isomers are used as intermediates or precursors in the production of other industrial chemicals.

[3] It may also be used as a solvent, but has practical limitations as such, because of its low boiling point (commercial listings, 19 °C; lit.

[4] It is regarded as a hazardous chemical for being toxic by inhalation (see MSDS), and a low-boiling liquid, and it causes irritation when it comes into contact with the skin and mucous membranes.