Used as a stabilizer and antioxidant in polymers, particularly in polyurethanes and elastomers, to prevent degradation from heat and oxidation. It enhances the longevity and performance of rubber products, including tires and industrial rubber goods. Also functions as a secondary antioxidant in combination with phosphites or thioesters in plastics, protecting against thermal aging during processing and in final applications. Commonly found in adhesives, sealants, and coatings where thermal stability is critical.