Used as a crosslinking agent in textile and paper industries to improve wet fastness and durability of dyes. Enhances binding of reactive dyes to cellulose fibers, resulting in brighter colors and reduced dye leaching. Also applied in polymer chemistry to modify resins and coatings for increased thermal and chemical resistance. Its bifunctional vinyl sulfone groups enable efficient covalent bonding in hydrogel formation and in the development of functional membranes.