Chlorobenzene, also known as monochlorobenzene (MCB), is a colourless, volatile, water-insoluble liquid with a light, pleasant almond fragrance. It belongs to the family of organic halogen compounds, which is a large class of natural and synthetic chemical substances. These compounds contain one halogen atom or more (fluorine, chlorine, bromine, or iodine) combined with carbon atoms and other elements. Chlorobenzene is formed by the direct chlorination reaction of benzene.
Chlorobenzene is a strong solvent used in many industries. It is also used as a high boiling solvent in industrial synthesis and in laboratories. Monochlorobenzene is also an important element in the production of API (Active Pharmaceutical Ingridients). Reagent chlorobenzene p.a. it is used in instrumental analysis as a universal solvent in gas chromatography, for environmental analysis, e.g. in the determination of ethylene oxide, propylene oxide.