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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Adsorption to solid soil phase and sediment is expected.

Key value for chemical safety assessment

Additional information

The log Koc was calculated to be >10 using EPIWin KOCWIN (v2.00): estimation using first-order Molecular Connectivity Index (MCI) and estimation using estimated or experimentally derived log Kow (BASF SE, 2017).

The substance is likely to occur as an uncharged molecule under environmentally relevant pH-ranges (pKa value ca. 11 -12). Considering that, this calculation refers to the uncharged molecule.

The substance is out of the applicability domain of the model, therefore, the exact KOC value might not be correct or have a higher uncertainty but the QSAR results give an indication of the high adsorption potential.

However, a log Koc of that value indicates that the tested substance binds tightly to soils and sediments and thus, the bioavailability and the overall exposure potential is reduced.