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Ecotoxicological information

Sediment toxicity

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Description of key information

Key value for chemical safety assessment

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In accordance with column 2 of REACH Annex IX and X, the toxicity testing to sediment organisms shall be proposed depending on the results of the chemical safety assessment. For substances being considered as „readily biodegradable“, it can be assumed that they will be completely biologically degraded within the STP process. Indirect exposure to sediment is not likely e.g. via agricultural use of sewage sludge since 2,2'-iminodiethanol is readily biodegradable. Furthermore, for substances not passing the STP-process but being readily biodegradable, it can be assumed that they will be also biological degraded in the surface water within a short time. Direct exposure to sediment is not likely, since the substance is not intentionally applied to sediment. The substance has no potential to bioaccumulate nor is it considered as a PBT/vPvB substance. Adsorption to solid soil phase is not expected (log Koc < 3). In conclusion no testing is required. As a consequence, no tests on sediment organisms are provided.

The predicted no effect concentration (PNEC) for sediment was derived from the PNEC for freshwater using the equilibrium partitioning method.