Used as an antioxidant in rubber and polymer products, particularly in tires and industrial rubber goods, to prevent degradation caused by oxygen and ozone. It protects against cracking, hardening, and loss of tensile strength, extending the service life of rubber components exposed to heat and stress. Also employed in lubricants and greases to improve thermal stability and reduce oxidation during high-temperature operation. Its effectiveness in inhibiting free radical reactions makes it valuable in stabilizing sensitive organic materials.