Widely used in the production of phthalic anhydride, which is a key raw material for making plasticizers, dyes, and resins. Also serves as a precursor in the synthesis of certain insecticides, particularly mothballs, due to its fumigant properties. Employed in the manufacturing of surfactants and wetting agents used in industrial processes. Historically used as a repellent and disinfectant, though such uses have declined due to health concerns. Found in some dye and resin formulations where aromatic hydrocarbon structures are required.