Used as a flame retardant in various materials including textiles, plastics, and foams, enhancing fire safety by reducing flammability. It is also employed as an intermediate in the synthesis of other phosphorus-containing compounds, which are utilized in water treatment, detergents, and metal finishing processes. Additionally, it serves as a stabilizer and viscosity regulator in certain industrial formulations. Its ability to improve thermal stability makes it valuable in coatings and adhesives, ensuring durability under high temperatures.