Used as an antioxidant in polymers, particularly in polyolefins such as polyethylene and polypropylene. It protects materials from thermal and oxidative degradation during processing and extends service life by preventing polymer chain breakdown. Effective in stabilizing against discoloration and maintaining mechanical properties under high-temperature conditions. Commonly used in wire and cable compounds, films, and molded parts where long-term heat stability is required. Also serves as a secondary antioxidant in combination with primary antioxidants like hindered phenols.