Used primarily as a high-performance ultraviolet (UV) stabilizer in polymers and organic materials. It effectively protects plastics, coatings, and adhesives from degradation caused by prolonged exposure to sunlight and UV radiation. Commonly added to polyolefins, polycarbonates, and acrylics to prevent yellowing, cracking, and loss of mechanical strength during outdoor use. Its bulky molecular structure enhances compatibility with hydrophobic matrices and improves long-term stability. Also employed in specialty films and optical materials where clarity and durability are critical. Shows low volatility and good thermal resistance, making it suitable for processing at elevated temperatures.