Used as an intermediate in organic synthesis, particularly in the preparation of phosphonate-based pharmaceuticals and agrochemicals. Acts as a ligand in catalysis, enhancing selectivity in metal-catalyzed reactions. Employed in the development of flame retardants due to its ability to promote char formation in polymers. Also utilized in surface modification of metal oxides and nanoparticles for improved stability and dispersion in coatings and composites. Shows application in analytical chemistry as a derivatizing agent for detection of certain functional groups.