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Dissociation constant

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Description of key information

The pKa of the constituents of Alcohols, C12-13 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 the constituents of Alcohols, C12-13 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, the constituents of Alcohols, C12-13 will be non-ionised. There is no need to conduct further testing.

In some cases the CAS and chemical identity stated refer to SDA nomenclature for this substance. in REACH substance identification it is necessary to be more specific as to the chain lengths present. Full details may be found in the CSR.