Nonylbenzene is primarily used as an intermediate in the production of detergents and surfactants. It plays a key role in the synthesis of linear alkylbenzene sulfonates (LAS), which are widely used in household and industrial cleaning products due to their excellent cleaning and foaming properties. Additionally, it is utilized in the formulation of lubricants and as a solvent in various industrial applications. Its chemical structure makes it suitable for enhancing the performance of products requiring stable and effective surface-active agents.