Butyl benzenesulfonate is primarily used as an intermediate in the synthesis of various organic compounds. It plays a significant role in the production of surfactants, which are essential in the formulation of detergents, emulsifiers, and wetting agents. Additionally, it is utilized in the manufacturing of plasticizers, which enhance the flexibility and durability of plastics. In the pharmaceutical industry, butyl benzenesulfonate serves as a reagent in the synthesis of certain drugs. Its application extends to the field of agrochemicals, where it is involved in the production of pesticides and herbicides. The compound's properties make it valuable in industrial processes that require sulfonation reactions, contributing to the development of various chemical products.