Used as a flame retardant additive in polymers and plastics, particularly in engineering thermoplastics like polyamides and polyesters. It enhances thermal stability and reduces flammability without compromising mechanical properties. Commonly applied in electronic components, wire coatings, and automotive parts where high heat resistance and safety are critical. Also utilized in reactive formulations where it can be chemically bonded into polymer chains to improve durability and flame resistance. Shows good compatibility with other additives and maintains color stability in final products.