Vinylphosphonic acid

Vinylphosphonic acid is an organophosphorus compound with the formula C₂H₃PO₃H₂. It is a colorless, low-melting solid although commercial samples are often yellowish viscous liquids. It is used to prepare adhesives. As in other phosphonic acids, the phosphorus center is tetrahedral, being bonded to an organic group (vinyl in this case), two OH groups, and an oxygen.