Bis(4-octylphenyl)amine is primarily utilized as an antioxidant and stabilizer in various industrial applications. It is commonly incorporated into polymers and plastics to prevent degradation caused by heat, light, and oxidation, thereby extending the material's lifespan. This compound is also employed in the production of lubricants and oils, where it enhances thermal stability and reduces the formation of harmful by-products during high-temperature operations. Additionally, it finds use in the rubber industry to protect elastomers from oxidative aging, maintaining their flexibility and durability. Its effectiveness in inhibiting degradation processes makes it a valuable component in the formulation of coatings, adhesives, and sealants.