Used as a high-performance stabilizer in polymers, particularly in polyolefins and engineering plastics, to prevent thermal and oxidative degradation during processing and long-term use. Offers excellent resistance to discoloration and maintains mechanical properties under high-temperature conditions. Commonly employed in wire and cable insulation, automotive components, and industrial films where extended service life and stability are critical. Also utilized in combination with other additives to enhance synergistic effects in antioxidant and light-stabilizing systems.