Tripropyl phosphate is primarily used as a plasticizer in the production of plastics and resins, enhancing their flexibility and durability. It is also employed as a flame retardant in various materials, helping to reduce flammability and improve fire safety. In the industrial sector, it serves as a solvent and extractant in chemical processes, particularly in the separation and purification of metals. Additionally, it finds application in the manufacturing of adhesives and coatings, where it improves performance and stability. Its lubricating properties make it useful in certain hydraulic fluids and lubricants.