odichlorobenzene

o-Dichlorobenzene, more commonly written as o-dichlorobenzene, is an aromatic chlorinated hydrocarbon with the formula C6H4Cl2. It is the ortho isomer of dichlorobenzene, in which the two chlorine substituents occupy adjacent positions on the benzene ring. It is a colorless to pale yellow liquid at room temperature and has a strong, penetrating odor.

Production and purification typically involve the chlorination of chlorobenzene or related precursors under controlled conditions to yield the desired isomer distribution. The product is separated from other dichlorobenzene isomers by distillation and purification steps to obtain a relatively pure o- form.

Applications for o-dichlorobenzene include use as a solvent in various industrial processes and as an intermediate in the manufacture of other organic chemicals. It is employed in the synthesis of dyes, pigments, and certain agrochemicals, and can be used in resin and wax formulations as well.

Safety and environmental considerations are important for o-dichlorobenzene. It is hazardous if inhaled or absorbed through the skin and can irritate the eyes and respiratory tract; prolonged exposure may affect liver and kidney function. It is toxic to aquatic life and may persist in the environment. Handling requires appropriate engineering controls, personal protective equipment, and compliance with safety regulations. Spills and waste are regulated, and disposal is managed as hazardous chemical waste.

Regulatory status varies by country but generally falls under chemical safety frameworks that govern chlorinated aromatics. Safety data sheets provide specific handling, storage, exposure limits, and disposal guidance, and regulatory programs may impose restrictions on use and emissions depending on jurisdiction.