Di-n-octyl phthalate solution is widely used as a plasticizer in the production of flexible polyvinyl chloride (PVC) products. It enhances the flexibility, durability, and workability of PVC, making it suitable for applications such as flooring, cables, hoses, and synthetic leather. Additionally, it is employed in the formulation of adhesives, coatings, and inks to improve their performance and stability. In industrial settings, it serves as a solvent or processing aid in various chemical processes. Its compatibility with polymers and ability to lower processing temperatures make it a valuable component in manufacturing.