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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Partition coefficient

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Administrative data

Link to relevant study record(s)

Description of key information

3.18(±0.07), 25±1°C, pH-metric, draft OECD 122, Chamberlain
3.2, pH=2.57, 20°C, shake flask, OECD 107, Wollerton

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
20 °C

Additional information

Two experimental values are available for 2-(4-((5-(trifluoromethyl)pyridin-2-yl)oxy)phenoxy)propanoic acid, which is considered to be the more relevant lipophilic species in its non-ionised form. One is for the (R)-enantiomer, the second is the racemate; both are equivalent for this endpoint. B

oth reported values are in very good agreement (to within experimental error), however the values from Wollerton et al are selected for both dataset consistency, and as they were collected under GLP.