C6H4Cl2, commonly known as dichlorobenzene, is an organic compound that consists of a benzene ring with two chlorine atoms attached. It has several isomers, including ortho-dichlorobenzene, meta-dichlorobenzene, and para-dichlorobenzene, which differ in the positions of the chlorine atoms on the benzene ring. This compound is primarily used as a solvent and in the production of other chemicals. Dichlorobenzene is a colorless liquid with a sweet odor and is not soluble in water. It is often used in industrial applications, such as in the manufacture of pesticides and as a fumigant. Due to its chemical properties, it can be harmful to human health and the environment, necessitating careful handling and regulation.