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Environmental fate & pathways

Adsorption / desorption

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Description of key information

log Koc: > 5 (KOCWIN v2.00)

Key value for chemical safety assessment

Additional information

No studies investigating the adsorption/desorption behaviour of Multi constituent ester of pentaerythritol 2-ethylhexanoate are available. Using the KOCWIN Program (v2.00), log Koc values in the range of 2.10 to 9.27 were calculated for its main components based on the molecular conductivity index (MCI; Hopp, 2012). This model has no universally accepted definition of its model domain. However, the diester and triester component of the UVCB substance fit into the domain of the training set of the method, and the resulting Koc value of 2.10 and 5.69 are reliable. As the tetraester component is outside the Kow range of the training set, the result should be taken with caution. The definite value for this component may not be fully reliable, but indicate a high adsorption potential of this substance (log Koc = 9.27), which is to be expected as the triester component already indicate to have a high adsorption potential (log Koc > 5). Based on this information and as the tri- and tetraester component represent the major share of components within this multi-constituent substance, it can be assumed that the adsorption potential of Multi constituent ester of pentaerythritol 2-ethylhexanoate is high.