Used as a stabilizing agent in the production of polymers, particularly in the synthesis of polycarbonates and polyesters. It acts as a catalyst or co-catalyst in various organic reactions, including the Wittig reaction, which is crucial for forming alkenes. Employed in the pharmaceutical industry for the synthesis of active pharmaceutical ingredients (APIs) due to its ability to facilitate complex chemical transformations. Also utilized in the preparation of flame retardants, where it enhances the fire resistance of materials. In the field of material science, it serves as a ligand in coordination chemistry, aiding in the development of metal complexes. Additionally, it is used in the purification of certain chemicals, acting as a solvent or extraction agent.