N-Butylbenzenesulfonamide is primarily used as a plasticizer in the manufacturing of polyamide resins, where it enhances flexibility and processability. It is also employed as an intermediate in the synthesis of various organic compounds, including pharmaceuticals and agrochemicals. Additionally, it finds application in the production of high-performance polymers and coatings, where it improves durability and resistance to environmental factors. In the textile industry, it is utilized as a softening agent for synthetic fibers. Its compatibility with a range of materials makes it a versatile component in industrial applications.