Used as a reactive flame retardant in polymer materials, particularly in high-impact polystyrene, polyurethanes, and engineering thermoplastics. It integrates into the polymer chain during synthesis, enhancing flame resistance without leaching out over time. Commonly applied in electronic enclosures, circuit boards, and electrical connectors where thermal stability and fire safety are critical. Its bromine content effectively suppresses combustion, making it suitable for meeting stringent flammability standards in consumer electronics and industrial components.