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Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Description of key information

Key study: Givaudan (2012), Adsorption (OECD 121 and EU Method C.19): log Koc 3.07.

Key value for chemical safety assessment

Koc at 20 °C:
1 175

Additional information

The adsorption of the test material was determined in a GLP compliant study (Givaudan, 2012d) performed in accordance with the standardised guidelines EU Method C.19 and OECD 121 (HPLC method) with a sufficient level of detail to assess the quality of the presented data. The study was performed to a good standard and was assigned a reliability score of 1 in accordance with Klimisch (1997) and considered suitable to fulfil the data requirement. The log Koc of the test substance was determined to be 3.07 with an average retention time of 6.049 minutes. The determination was performed at 35°C (column temperature), however the values can be considered to represent the values 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.