Cis-1,2-dichloroethylene is a chemical compound with the formula C2H2Cl2. It is a colorless liquid with a sweet odor, commonly used as a solvent and in the production of other chemicals. This compound is part of the dichloroethylene family, which includes both cis and trans isomers, differing in the arrangement of chlorine atoms around the double bond. Cis-1,2-dichloroethylene is primarily utilized in industrial applications, such as in the manufacture of fluorinated compounds and as a degreasing agent. It is important to handle this substance with care due to its potential health effects, including irritation to the skin and respiratory system.