Used primarily as an antioxidant in plastics, rubber, and fuels to prevent degradation from oxygen and heat. It stabilizes polymers during processing and extends the lifespan of rubber products by inhibiting oxidative breakdown. Also serves as an intermediate in the synthesis of other industrial chemicals, including dyes and additives. Its phenolic structure makes it effective in scavenging free radicals, enhancing the durability of materials exposed to high temperatures or UV radiation.