Used primarily as an intermediate in the production of dyes, pigments, and polymers. It plays a crucial role in the synthesis of azo dyes, which are widely applied in textiles, leather, and paper industries. Additionally, it is utilized in the manufacture of epoxy resins, enhancing their durability and thermal stability, and in high-performance aramid fibers such as Nomex for flame-resistant applications. In the field of hair coloring, it serves as a key component in oxidative hair dyes, providing long-lasting color, though it may cause allergic reactions in sensitive individuals. It is also employed in the production of polyurethane foams and adhesives, contributing to their strength and flexibility. Furthermore, it finds application in corrosion inhibitors, protecting metal surfaces in industrial settings.