Di-n-octyl sebacate is widely used as a plasticizer in the production of flexible polyvinyl chloride (PVC) products. It enhances the flexibility, durability, and workability of PVC materials, making it suitable for applications such as cables, hoses, and synthetic leather. Additionally, it is employed in the manufacturing of coatings and adhesives, where it improves the performance and longevity of the final products. Its compatibility with various polymers also makes it a valuable component in the formulation of lubricants and greases, ensuring smooth operation and reduced friction in mechanical systems. Furthermore, it is utilized in the cosmetics industry as an emollient, providing a soft and smooth texture to skincare products.