Used primarily as a plasticizer in polymer formulations to improve flexibility and workability of plastics, especially in polyvinyl chloride (PVC) and related resins. It enhances low-temperature performance, making materials less brittle in cold environments. Also serves as a lubricant base stock in specialty applications due to its thermal stability and low volatility. Employed in the synthesis of other esters and as an intermediate in organic reactions where a long-chain diester is required. Its hydrophobic nature makes it useful in coatings and sealants to improve water resistance.