Used primarily as a light stabilizer in polymers, especially in plastics and coatings exposed to UV radiation. It protects materials from degradation caused by sunlight, helping to maintain color, strength, and flexibility over time. Commonly found in automotive coatings, industrial finishes, and plastic components used outdoors. Also utilized in adhesives and sealants to enhance durability. Its effectiveness in low concentrations makes it suitable for clear and pigmented systems where long-term weatherability is required.