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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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According to column 2 of Annexes IX and X, further testing on biodegradation should be considered if the chemical safety assessment indicates the need to investigate further the degradation of the substance and its degradation products. Based on the screening study conducted with 6-[(p-Tosyl)amino]hexanoic acid, compound with 2,2',2"- nitrilotriethanol (1:1) it was concluded that the substance is not readily biodegradable but can be concluded to be inherently biodegradable. Furthermore the results from the CSA do not trigger a need for further investigation of biotic degradation as risk for the aquatic and sediment compartment are acceptable in every scenario (RCR < 1). With respect to PBT/vPvB properties the substance is not considered PBT/vPvB and therefore further testing on biodegradation is not triggered. In accordance with column 2 of Annexes IX and X, no further biodegradation testing in surface water and sediment are needed.

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