C2H3SO3H

C2H3SO3H is the chemical formula for vinylsulfonic acid. It is an organosulfur compound that features a vinyl group directly attached to a sulfonic acid group. Vinylsulfonic acid is a strong acid due to the presence of the sulfonic acid functional group, which readily dissociates to release a proton. The molecule can undergo polymerization, forming poly(vinylsulfonic acid). This polymer has various applications due to its ionic properties. Vinylsulfonic acid is soluble in water and polar organic solvents. Its synthesis typically involves the reaction of chloroethylsulfonic acid with a base, leading to elimination of hydrogen chloride and formation of the vinyl group. It is an important monomer for the production of specialty polymers used in applications such as ion-exchange resins, membranes, and as flocculants.