Used as a stabilizer in polymers and resins to prevent degradation from heat and UV light. Commonly added to rubber, plastics, and adhesives to improve longevity and performance under high-temperature processing. Also functions as an antioxidant in industrial lubricants and greases, protecting against oxidation and extending service life. Its reactive structure allows it to be incorporated into coatings and varnishes, enhancing durability and resistance to yellowing. Widely utilized in the production of ion-exchange resins and as an intermediate in specialty chemical synthesis.