Used primarily as a chemical intermediate in the synthesis of pesticides and herbicides due to its reactive isothiocyanate group and stable trichlorophenyl backbone. It serves in the production of certain fungicides and algicides, especially in agricultural and aquatic settings. Its electrophilic nature allows it to participate in conjugation reactions for creating biologically active compounds. Also utilized in some specialty biocides for industrial water systems. Handling requires caution due to its irritant properties and potential environmental toxicity.