Used primarily as a plasticizer in polymers to enhance flexibility and durability. Commonly found in polyvinyl chloride (PVC) products such as flooring, wall coverings, and adhesives. Provides good solubility in resins and improves workability in coatings and sealants. Also used in some synthetic rubbers and cellulose ester plastics to improve elongation and resistance to impact. Due to volatility and health concerns, its use has declined in consumer products, especially in toys and childcare articles.