C2H2Cl2
C2H2Cl2 refers to a class of chlorinated hydrocarbons known as dichloroethenes. These compounds contain two carbon atoms connected by a carbon–carbon double bond, with two chlorine substituents and two hydrogens in total. There are two main structural isomer families: 1,1-dichloroethene, CH2=CCl2 (vinylidene chloride), and 1,2-dichloroethene, CHCl=CHCl, which exists as cis and trans forms. The isomers differ in structure, reactivity, and physical properties, including boiling points and volatility.
Production and uses: Dichloroethenes are produced commercially by chlorination of ethene and related processes. 1,2-Dichloroethene is
Physical properties and hazards: These compounds are typically colorless and volatile liquids at room temperature. They