Dinonylamine is primarily used as an intermediate in the synthesis of rubber chemicals, particularly as a precursor for antioxidants and antiozonants in rubber manufacturing. It helps protect rubber products from degradation caused by oxygen and ozone, extending the lifespan of tires and other rubber goods. It is also employed in the production of corrosion inhibitors for industrial lubricants and metalworking fluids, offering protection against rust and oxidation. Additionally, dinonylamine finds use in the formulation of surfactants and emulsifiers in various industrial processes due to its amine functionality and hydrophobic character.