Widely used as a plasticizer in the production of flexible polyvinyl chloride (PVC) and other polymers, providing improved workability, durability, and flexibility. Commonly found in wire and cable insulation, flooring, and films where resistance to heat and UV degradation is required. Also employed in industrial applications such as sealants, adhesives, and coatings due to its low volatility and good solvating properties. Its high molecular weight contributes to lower migration rates from plastic matrices, making it suitable for long-life products.