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Dissociation constant

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Description of key information

The pKa of pentadecanol, branched and linear is predicted to be 15.8 using a reliable freely-available method. 

Key value for chemical safety assessment

Additional information

No measured data for dissociation constant of pentadecanol, branched and linear were available. The pKa value (normal conditions) was predicted using SPARC.

While the hydroxyl group is ionisable, aliphatic alcohols are extremely weak acids and only dissociate under strongly basic conditions. In the range of pH usually considered relevant to the human body and environment, i.e. pH 2-9, pentadecanol, branched and linear will be non-ionised. There is no need to conduct further testing.