C6H5Cl, commonly known as chlorobenzene, is an organic compound consisting of a benzene ring (C6H5) with a chlorine atom (Cl) attached. It is a colorless, flammable liquid with a sweet odor and is primarily used as a solvent in chemical reactions and as an intermediate in the production of various chemicals, including pesticides and dyes. Chlorobenzene is produced through the chlorination of benzene, a process that involves the substitution of a hydrogen atom with a chlorine atom. It is important in the field of organic chemistry and is often used in laboratories and industrial applications. However, it is also considered hazardous, as it can be toxic to humans and the environment.