Used primarily as an antioxidant in organic materials, especially in polymers and resins, to prevent degradation caused by oxidation. It protects against thermal and UV-induced breakdown during processing and long-term use. Commonly added to plastics, adhesives, and coatings to extend service life and maintain physical properties. Also employed in the stabilization of fuels and lubricants to inhibit gum and sediment formation. Its sterically hindered phenolic structure provides effective radical scavenging, making it suitable for high-temperature applications.