1,2-Dichlorobenzene is primarily used as a solvent for a variety of chemical processes. It is effective in dissolving compounds that are otherwise difficult to dissolve, making it useful in the manufacturing of dyes, resins, and rubber. Additionally, it serves as an intermediate in the synthesis of other chemicals, including pesticides and herbicides.

In industrial settings, it is often employed as a degreasing agent for metals and machinery, ensuring the removal of oils and greases. It also finds application in the production of wood preservatives, where it helps in protecting wood from pests and decay.

Another notable use is in the formulation of deodorants and disinfectants, where its properties help in controlling odors and microbial growth. It is also utilized in the synthesis of pharmaceuticals, contributing to the production of certain medications.

Despite its utility, handling requires caution due to its toxic nature, and appropriate safety measures must be followed to minimize exposure and environmental impact.