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Physical & Chemical properties

Dissociation constant

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Description of key information

Several values were found, obtained with different methods. The value retained is 4.94.

Key value for chemical safety assessment

pKa at 20°C:
4.94

Additional information

Several different values for the pKa have been found: 4 determined at 25°C, (between 4.882 and 5.0) and 3 at 20°C (between 4.78 and 4.957).

The retained value is 4.94, in the middle of the range of the values determined at 20°C.