Used as an antioxidant in polymers and elastomers, particularly in rubber products to prevent degradation from heat, light, and oxygen. It helps extend the service life of rubber components such as tires, hoses, and belts by inhibiting oxidative aging. Also employed in lubricants and greases to improve thermal stability and reduce sludge formation under high-temperature operating conditions. Its effectiveness in radical scavenging makes it suitable for stabilizing sensitive organic materials during processing and long-term use.