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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 at 25°C

Key value for chemical safety assessment

Additional information

In consequence of the extremely low water solubility (<0.1 mg/L), the dissociation constant could not be determined experimentally. The pKa values have to be calculated instead.

The pKa-value was calculated using program SPARC v.4.2 which resulted a range of 11 to 12.6. An additional calculation using program ACD/pKa which yielded a pKa value of 11.7 at 25°C.

It can be assumed that the test substance has a pKa value of >11.