Chlorobenzene is produced by benzene chlorination in a catalyst presence, and it is produced as an end product in the reductive trichlorobenzenes and chlorination of di-.
It is massively used in the manufacturing of aniline, phenol, and DDT, as a medium for heat transfer, and as solvents in paints. It is also widely utilized in the dry-cleaning industry.
Chlorobenzenes are used as intermediates in pesticides, dyes, and other industrial chemicals production, including tetrachlorbenzene which is used as dichlorobenzene, or dielectric fluid, as a moth repellent.