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Dissociation constant

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Description of key information

The dissociation constant (pKa) of o-cresol is 10.29 at 25°C.

Key value for chemical safety assessment

pKa at 20°C:
10.29

Additional information

There is only a value at 25°C available. It is assumed that change in pKa is not a very sensitive function of temperature, and the value at 25°C is therefore assigned to a temperature of 20°C.

o-Cresol is a weak acid. The pKa value of 10.29 indicates that at environmentally relevant pH values (5 - 9) the substance is largely non-dissociated.

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