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Physical & Chemical properties

Dissociation constant

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Description of key information

Dissociation constant (pKa): 15.18, not expected to dissociate

Key value for chemical safety assessment

Additional information

1,4 -Butynediol does not contain any ionizable functional groups and significant dissociation is therefore not expected as evidenced by a dissociation constant (pKa) of 15.18 at 25°C calculated by SPARC Online Calculation method (ISP, 2010).