Used primarily as a light stabilizer in polymers, this compound protects materials from degradation caused by ultraviolet (UV) radiation. It is especially effective in polyolefins, polyurethanes, and acrylics, helping to prevent yellowing, cracking, and loss of mechanical strength during outdoor exposure. Commonly found in automotive parts, coatings, and plastic films, it enhances the longevity and appearance of products exposed to sunlight. Its low volatility and good compatibility with resins make it suitable for both extrusion and molding processes.