Used primarily as a plasticizer in polyvinyl chloride (PVC) and other polymers to improve flexibility, workability, and durability. It enhances the elongation and resilience of plastic products while maintaining thermal stability. Commonly found in cables, flooring, films, and coatings where moderate flexibility and good low-temperature performance are required. Also employed in adhesives and sealants to improve tack and bonding characteristics. Its relatively low volatility compared to shorter-chain phthalates makes it suitable for applications requiring longer service life.