Registration Dossier

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Log Koc for the test item, Bourgeonal, is 2.98. This is equivalent to a Koc of 955.

Key value for chemical safety assessment

Koc at 20 °C:

Additional information

The adsorption coefficient (Koc) for the test item, Bourgeonal, on soil and on sewage sludge was determined using the reverse phase high performance liquid chromatography method according to OECD method 121. The chromatograms showed one peak at an average retention time of 8.85 minutes corresponding to a log Koc value of 2.98. Hence, the log Koc for the test item, Bourgeonal, is 2.98.

The determination was performed at 35 °C (temperature of the column) but the value obtained can be considered to represent the value at an unspecified, probably ambient temperature since no mention is made in the guidelines of the temperature at which the tabulated reference substances log Koc values were determined. Adsorption coefficients of the test and reference substances are assumed to vary with temperature in the same way.