Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Based on available biodegradation screening studies, the substance is considered as inherently biodegradable.

Further biotic degradation testing has not been conducted. In accordance with REACH Annex IX column 2, simulation tests in surface water, sediment and soil are not considered necessary as the chemical safety assessment according to Annex I gives safe risk characterization ratios at the regional scale. Therefore half-life data from simulation tests is not required to further refine the environmental risk assessment.

Identification and/or the assessment of degradation products is not required. The structures of the most probable breakdown products from the process of biodegradation have been predicted using a valid QSAR-expert system. All predicted metabolites are more polar than the parent and are expected to be less toxic to the aquatic environment. Moreover for PBT/vPvB assessment purposes, both the parent and breakdown products have log Kow values which are below the B screening criterion of > 4.5. Thus no further assessment of the degradation products is warranted.