Used primarily as a plasticizer in plastics, especially polyvinyl chloride (PVC), to increase flexibility and durability. Commonly found in products such as cables, flooring, wall coverings, and hoses. Also used in adhesives, sealants, and printing inks to improve workability and adhesion. Has been used in the formulation of coatings and varnishes for better film formation. Historically used in cosmetics and personal care products, such as nail polishes and perfumes, to enhance fragrance retention and prevent chipping, though its use in consumer cosmetics has declined due to health concerns. Occasionally used as a solvent or carrier in pesticide formulations and in the production of printing inks.