Used as a reactive flame retardant in polymer formulations, particularly in plastics and resins. It participates in polymerization processes, becoming chemically bonded into the material, which enhances flame resistance without leaching out over time. Commonly applied in electronic enclosures, circuit boards, construction materials, phone cases, and automotive parts where thermal stability and fire safety are critical. Its reactive nature improves compatibility with the polymer matrix, maintaining mechanical properties while providing effective fire protection.