Used primarily as a plasticizer in polyvinyl chloride (PVC) and other polymers to increase flexibility, durability, and workability. Commonly found in applications such as cables, flooring, films, and molded plastic parts where resistance to heat and light is required. Also used in adhesives, sealants, and coatings to improve performance under stress and environmental exposure. Due to its low volatility, it helps maintain the physical properties of plastics over extended periods. However, its use is declining in some regions due to health and environmental concerns, especially in consumer products and children's toys.