Used primarily as a plasticizer in polymers to improve flexibility and workability, especially in PVC and other vinyl applications. Enhances low-temperature performance and increases durability of plastic products. Also functions as a lubricant additive, improving viscosity stability and thermal resistance in synthetic lubricants. Employed in coatings and adhesives to modify flexibility and adhesion properties. Its long alkyl chain structure contributes to good water resistance and compatibility with hydrophobic matrices.