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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Estimated pka1=2.83
Estimated pka2=8.18

Key value for chemical safety assessment

Additional information

The prediction of constant dissociation was estimated using a recommended QSAR model : SPARC (October 2011 release w4.6.1691-s4.6.1687). The test item fall into the applicability domain of SPARC.

At environmental pH (5 to 9), the test item is on ionized form with one or two negative charges.