This chemical is primarily utilized in the field of polymer chemistry as a flame retardant additive. It is incorporated into various polymeric materials, such as plastics and textiles, to enhance their fire resistance properties. The compound works by promoting char formation and reducing the release of flammable gases during combustion, thereby slowing down the spread of fire. Additionally, it is employed in the synthesis of specialized polymers where phosphonate groups are required to impart specific characteristics like improved thermal stability and adhesion properties. Its application is particularly valuable in industries manufacturing safety-critical products, including electrical insulation materials and protective clothing.