Used primarily as an intermediate in organic synthesis, it plays a key role in the production of sulfonamides, which are important in pharmaceutical applications, particularly as antibiotics. It is also employed in the manufacture of dyes, where it helps in introducing sulfonyl groups into organic molecules, enhancing their color properties and stability. In the polymer industry, it serves as a cross-linking agent for resins and plastics, improving their mechanical strength and thermal stability. Additionally, it is utilized in the synthesis of agrochemicals, contributing to the development of pesticides and herbicides. Its reactivity with amines and alcohols makes it valuable for creating various specialty chemicals used in research and industrial processes.