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Physical & Chemical properties

Dissociation constant

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Description of key information

The pKa of vinylsulfonic acid is smaller than 0 and cannot be determined accurately in aqueous environment. This fits with literature data concerning the pKa of aliphatic sulfonic acids.

Key value for chemical safety assessment

Additional information

The data from the study show that the pKa of vinylsulfonic acid is smaller than 0, while the minimum pKa that can be measured in wate is 0.