Used primarily as a plasticizer in polymers, especially in polyvinyl chloride (PVC) and related plastics, to improve flexibility, workability, and durability. It is favored in applications requiring good low-temperature performance and resistance to extraction by water or oils. Commonly found in wire and cable coatings, flooring materials, films, and sheets where enhanced thermal stability and reduced migration are needed. Also used in some synthetic lubricants and sealants due to its ester-based structure and moderate volatility.