Used as an intermediate in the synthesis of pesticides, disinfectants, and pharmaceuticals. Employed in the production of certain herbicides and agrochemicals due to its ability to form chlorinated aromatic structures. Also serves as a building block for antimicrobial agents such as triclosan and preservatives in industrial formulations. Found in some wood preservatives and antifouling paints. Additionally used in analytical chemistry as a derivatization reagent for detecting steroids and other compounds.