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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

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Administrative data

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Description of key information

The dissociation constant (pKa) of the substance is 4.01 ± 0.1 at temperatures varying between 25 and 26.9 °C. This value is read across from measured data on the C12-14 amine oxide.

Key value for chemical safety assessment

pKa at 20°C:

Additional information

The dissociation constant (pKa) of C12 -14 amine oxide was determined in a GLP study according to OECD TG 112 [Van Assche, 2002]. Measurements were performed in triplicate and the temperature varied between 25 and 26.9 °C. Dissociation constant is not expected to be affected to any great extent by the alkyl chain length and hence it is justified to read this value across to the C12 -18 amine oxide.