Used primarily as an intermediate in the synthesis of high-performance antioxidants, especially in the production of hindered phenolic antioxidants. These antioxidants are critical in stabilizing polymers, plastics, and synthetic rubbers against thermal and oxidative degradation during processing and long-term use. Commonly found in polyolefins such as polyethylene and polypropylene, it helps extend material lifespan by preventing chain scission and cross-linking caused by heat and oxygen. Also utilized in adhesives, sealants, and elastomers to maintain flexibility and strength under high-temperature conditions. Its derivatives are effective in lubricants and fuels to inhibit oxidation and sludge formation. Due to its bulky tert-butyl groups, it offers superior radical scavenging activity, making it ideal for demanding industrial and automotive applications.