2,6-Dichlorobenzoyl chloride is primarily used as a reactive intermediate in organic synthesis for agrochemicals, pharmaceuticals, dyes, and specialty polymers. The acyl chloride functionality facilitates the formation of amide and ester bonds with amines and alcohols, enabling the construction of complex molecules such as substituted benzamides with biological activity. It is particularly valuable in developing herbicides, fungicides, and pharmaceutical agents where chlorinated aromatic structures provide enhanced stability and efficacy. Due to its high reactivity and corrosive properties, it requires careful handling under inert atmospheres and controlled conditions in industrial and laboratory environments.