Allylsulfonic

Allylsulfonic acid is an organosulfur compound with the chemical formula CH2=CHCH2SO3H. It is characterized by the presence of both an allyl group (CH2=CHCH2-) and a sulfonic acid group (-SO3H). The allyl group contains a carbon-carbon double bond, making the molecule reactive in addition reactions. The sulfonic acid group is strongly acidic. Allylsulfonic acid is typically a colorless liquid or solid depending on its purity and temperature. It is soluble in water and polar organic solvents.

The compound can be synthesized through various methods, often involving the reaction of an allyl halide with a sulfite salt, followed by acidification. Another common route involves the oxidation of allyl mercaptans. Allylsulfonic acid and its salts, such as sodium allylsulfonate, find applications in polymer chemistry. They can be incorporated into polymers to improve properties like hydrophilicity, dyeability, and antistatic characteristics. These modified polymers are used in textiles, coatings, and adhesives. The reactivity of the double bond also allows for further functionalization or crosslinking. Due to its acidic nature, it can also be used as a catalyst in certain organic reactions. The handling of allylsulfonic acid requires care as it is a strong acid and can be irritating.