Benzenesulfonanilide is primarily used as an intermediate in the synthesis of various dyes and pigments, contributing to the production of vibrant and stable colors in textiles, inks, and plastics. It also finds application in the pharmaceutical industry, where it serves as a building block for the development of certain drugs, particularly those targeting bacterial infections. Additionally, it is utilized in organic chemistry research for the preparation of sulfonamide derivatives, which are studied for their potential biological activities. Its role in these industries highlights its importance in both industrial manufacturing and scientific innovation.