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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The adsorption coefficient on soil (Koc) of the test item was determined according to OECD guideline no. 121 and EU test method C.19. The Koc and log Koc of the test item was determined to be 40000 and 4.6, respectively.

Key value for chemical safety assessment

Koc at 20 °C:
40 000

Additional information

Using the HPLC method the adsorption coefficient on soil (Koc) of the test item was determined according to OECD guideline no. 121 and EU test method C.19. The log Koc-value of the test item fell within a range of ± 0.1 units, thus the test is satisfactory. As the test item exhibits a high retention time (ca. 26 minutes) an extrapolation was necessary because no adequate calibration substance with a large Koc value were found.

The Koc and log Koc of the test item at 25 °C was determined to be 40000 and 4.6, respectively.