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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Calculated pKa= 11.4 at 25°C

Key value for chemical safety assessment

Additional information

The test substance is extremely little soluble in water (<0.3 µg/L) thus an experimental determination of the dissociation constants is not possible.


The calculation was based on dissociable functional group of test compound, according to D.D.Perrin, Boyd Dempsey and E.P.Serjeant, pKa Prediction for Organic Acids and Bases, Chapman and Hall, London, 1981.