Used as a thermal stabilizer and antioxidant in polymers, particularly in polyolefins such as polyethylene and polypropylene. It helps prevent degradation during high-temperature processing, maintaining the material’s mechanical properties and color stability. Also employed in adhesives and sealants to enhance long-term performance under heat and oxidative stress. Its sterically hindered structure provides effective radical scavenging, making it suitable for applications requiring extended service life under harsh conditions.