Dichlorobenzenes are a group of chemical compounds that consist of a benzene ring with two chlorine atoms attached. There are three isomers: ortho-dichlorobenzene, meta-dichlorobenzene, and para-dichlorobenzene, each differing in the position of the chlorine atoms on the benzene ring. These compounds are commonly used as solvents and in the production of pesticides and dyes. Dichlorobenzenes are known for their distinct odors and are often found in industrial applications. However, they can be harmful to human health and the environment, leading to regulations on their use and disposal. Proper handling and safety measures are essential when working with these chemicals.