Tripropyl trimellitate is primarily 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, wires, and synthetic leather. Its compatibility with PVC ensures improved performance in high-temperature environments, making it a reliable choice for industrial and consumer goods. Additionally, it is utilized in coatings and adhesives, where it contributes to better film formation and adhesion properties. Its low volatility and stability also make it a preferred option for long-lasting plasticized products.