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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

List of species and pKa value regarded at 20 °C:
pKa= 4.77 for the mono-2-ethylhexyl ester FA component

Key value for chemical safety assessment

Additional information

The dissociation constant of the substance fatty acids, C18 unsatd., trimers, 2 ethylhexyl esters (CAS 173832-46-7) was determined by QSAR calculation with SPARC (v4.6) for the single components. No dissociation could be determined within the range pH = -0.2 - 14 for the di- and tri-2 -ethylhexyl esters FA components.