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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The adsorption/desorption coefficients of this complex reaction product were calculated according to Gerstl (1990), Briggs (1981) and Nendza (1998) based on the experimental values of n-octanol/water partition coefficient.
A range of adsorption/desorption coefficient log values was obtained: 2.56 to 3.88. 73.3% of the components have Log Koc ranged from 3.69 to 3.88.

Key value for chemical safety assessment

Koc at 20 °C:
7 586

Additional information

The adsorption/desorption coefficients of this complex reaction product were calculated according to Gerstl (1990), Briggs (1981) and Nendza (1998) based on the experimental values of n-octanol/water partition coefficient.

A range of adsorption/desorption coefficient log values was obtained: 2.56 to 3.88. 73.3% of the components have Log Koc ranged from 3.69 to 3.88.

The components with log Koc values between 3.69 and 3.88 being the most abundant (73.3%) and the other components being abundant less than 10%, the highest log Koc value (3.88) in this range was used for chemical safety assessment (CSA) and for the derivation of Predicted No-Effect Concentrations (PNEC) in sediments and soil.

This value was considered as a worst-case value, increase of adsorption/desorption coefficient value leading to a significant increase of the PEC soil value.

[LogKoc: 3.88]