Trichlorobenzene is a chemical compound that consists of a benzene ring with three chlorine atoms attached. It is a colorless liquid with a sweet odor and is primarily used as a solvent in various industrial applications, including the production of dyes, pesticides, and pharmaceuticals. There are three isomers of trichlorobenzene, distinguished by the positions of the chlorine atoms on the benzene ring: ortho, meta, and para. Each isomer has different properties and uses. Trichlorobenzene is also considered a pollutant and can be harmful to the environment and human health if not handled properly.