Used as a flame retardant in various polymers and plastics, enhancing fire resistance without compromising material properties. Applied in the production of textiles, coatings, and adhesives to improve safety and durability. Also serves as a stabilizer in lubricants and hydraulic fluids, reducing degradation under high temperatures and pressures. Its phosphonate structure makes it effective in chelating metal ions, useful in water treatment processes to prevent scaling and corrosion.