Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

pKa: 12.06-12.26 at 25 °C

Key value for chemical safety assessment

pKa at 20°C:

Additional information

The pKa values for three representative structures were estimated with the SPARC online calculator, recommended in Chapter 7.1.17 of the Guidance on Information Requirements and Chemical Safety Assessment. Since no ionised species are predicted in the pH range 5-9, the estimated pKa values are acceptable for use in the Chemical Safety Assessment according to the integrated testing strategy developed in the Guidance mentioned above.