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Adsorption / desorption

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Description of key information

Koc (soil A-F adsorption, Freundlich): 40.1, 42.2, 38.5, 83.6, 39.2, 48.7 Goodyear 1998

Koc (Soil #1 -5, adsorption, mL/g) : 46.9, 13.0, 16.2, 37.1, 10.4 S.Connor 2017

Kdesoc (Soil # 1 -5, desorption, mL/g): 68.0, 13.0, 20.1, 54.7, 16.4 S.Connor 2017

Key value for chemical safety assessment

Additional information

For (2R)-2-(4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenoxy)propanoic acid, Koc (adsorption, Freundlich) values were determined in 6 soils(Goodyear 1998) in the range of 38.5 to 83.6 mL/g (40.1, 42.2, 38.5, 83.6, 39.2 and 48.7 mL/g) and the Koc in 5 soils (S. Connor 2017) were in the range of 10.4 to 46.9 mL/g.

The difference could be justified by the different physico-chemical properties of test soils for the two studies.