Vinylsulfonic acid

Vinylsulfonic acid

Names
IUPAC name ethenesulfonic acid
Identifiers
CAS Number	1184-84-5 3039-83-6 (sodium salt)
3D model (Jmol)	Interactive image
ChemSpider	56254
ECHA InfoCard	100.013.342
PubChem	62474
InChI InChI=1S/C2H4O3S/c1-2-6(3,4)5/h2H,1H2,(H,3,4,5) Key: NLVXSWCKKBEXTG-UHFFFAOYSA-N InChI=1/C2H4O3S/c1-2-6(3,4)5/h2H,1H2,(H,3,4,5) Key: NLVXSWCKKBEXTG-UHFFFAOYAA
SMILES C=CS(=O)(=O)O
Properties
Chemical formula	C2H4O3S
Molar mass	108.11 g·mol−1
Appearance	colouless liquid
Boiling point	95 °C (203 °F; 368 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Vinylsulfonic acid is an organosulfur compound. It is a colorless liquid that tends to polymerize to polyvinylsulfonic acid. It is prepared by dehydration of isethionic acid:^[1]

HOC₂H₄SO₃H → CH₂CHSO₃H + H₂O

More easily handled than the acid is the salt, sodium vinylsulfonate, which is commercially supplied as an aqueous solution.

References

1. ↑ Kosswig, Kurt (2000). "Sulfonic Acids, Aliphatic". Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. doi:10.1002/14356007.a25_503. ISBN 3-527-30673-0.