Used primarily as a plasticizer in polyvinyl chloride (PVC) and other polymers to improve flexibility, durability, and workability. It is especially effective in applications requiring good low-temperature performance and resistance to extraction by water or oils. Commonly found in wire and cable insulation, automotive parts, flooring, and synthetic leather. Its molecular structure provides enhanced compatibility with PVC and contributes to improved UV and thermal stability in finished products. Also used in some adhesive and sealant formulations to increase elasticity and adhesion.