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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 values for first dissociation are in the range 14.9-15.1 for the main organic constituents

Key value for chemical safety assessment

pKa at 20°C:

Additional information

Such a values indicates that dissociation of constituents would not occur under any conceivable environmental conditions. For the sodium acetate component, as it is ionic, 100% dissociation in water is assumed.