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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Description of key information

The weighted average log Koc of the test substance was estimated to be 2.42 using the MCI (Molecular Connectivity Index) approach of the KOCWIN v2.00 program (EPISuite v4.1).


Key value for chemical safety assessment

Koc at 20 °C:

Additional information

The soil adsorption coefficient (Koc) value for the test substance was estimated using the MCI (Molecular Connectivity Index) approach of the KOCWIN v2.00 program (EPISuite v4.1). Since the test substance is a UVCB with similar constituents varying mainly in carbon chain lengths, the Koc values were estimated for the individual components followed by the determination of an overall weighted-average value using the mole fractions of all the individual components. SMILES codes were used as the input parameter for the log Koc estimations for the individual constituents. The estimated log Koc of the individual constituents ranged from 3.23 to 10.18 and the weighted average log Koc values of the test substance was calculated at 2.42 (US EPA, 2017). This indicates a moderate potential for adsorption to organic matter (White, 2009). The evaluation of domain applicability indicated that the estimates for all the constituents are reliable and accurate.

[LogKoc: 2.42]