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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

The bioconcentration factor for the substance was estimated by QSAR to be 77.4 L/kg.

Key value for chemical safety assessment

BCF (aquatic species):
77.4 L/kg ww

Additional information

Due to technical feasibility issues an experimental value could not be determined for TOFA DimerFA TETA PAA. Analytical methods of sufficient accuracy for testing concentrations of the substance in test media and biological material were not available. Further to this it is likely that a standard OECD 305 test would not be suitable for such a strongly sorbing substance.

A QSAR was conducted using BCFBAFv3.01 in order to calculate the bioconcentration factor from an estimated log Kow.

The BCF was estimated to be 77.4 L/kg. This indicates that the bioaccumulation potential for this substance is low, which is to be expected as the large molecular size will likely limit uptake of the substance by biological membranes. As such, this substance is not considered to be bioaccumulative.