Resorcinol bis(diphenyl phosphate) is widely used as a flame retardant in various polymer applications, particularly in thermoplastics and thermosetting resins. It is effective in enhancing the fire resistance of materials such as polycarbonates, polyesters, and epoxy resins, making it valuable in the electronics, automotive, and construction industries. Its ability to provide both flame retardancy and thermal stability without significantly compromising the mechanical properties of the base material is a key advantage. Additionally, it is employed in the production of circuit boards and electrical components, where fire safety is critical. Its compatibility with other additives and its relatively low volatility make it a preferred choice for high-performance applications requiring stringent fire safety standards.