Used primarily as a reagent in organic synthesis, it plays a key role in the preparation of sulfonamides through reactions with amines. These sulfonamides are valuable in pharmaceutical applications, including the development of antibacterial agents. Additionally, it is employed in the modification of polymers and resins, enhancing their properties for industrial use. Its reactivity with various organic compounds makes it a versatile intermediate in the production of dyes, agrochemicals, and other specialty chemicals.