Used primarily as a crosslinking agent in polymer chemistry, particularly in the production of specialty resins and functional polymers. It enables the formation of stable networks in polymeric materials, enhancing thermal and mechanical properties. Commonly applied in the development of ion-exchange membranes and hydrogels for controlled release systems. Also utilized in organic synthesis as a bifunctional alkylating agent due to its reactive sulfonate ester groups. Its ability to bridge molecular chains makes it valuable in creating tailored macromolecular architectures for advanced material applications.