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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

According to OECD Guideline 112, two dissociation constants with a pKa1 value of 5.9 and a pka2 of 9.6 were determined by potentiometric titration at 20 °C.

Key value for chemical safety assessment

pKa at 20°C:
5.9

Additional information

As conclusion the substance is mainly present in the dissociated form (once protonated) at environmentally relevant conditions.