Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

In a test according to OECD 310, the substance (10.41 mg C/L) degraded 12% over a period of 28 days. The substance is not readily biodegradable (Eurofins 2017). In a Zahn-Wellens test >70% degradation of a formulation of the substance was observed (Bayer 1987). Based on the composition of the tested substance in this Zahn-Wellens test, which is similar to that of the substance subject to registration, the outcome of this test is considered representative for the substance subject to registration.

The log Koc could not be calculated because gradient elution was necessary to eluate the analyte from the column. The determined log Koc is therefore above the log Koc of the highest reference standard 4,4’-DDT (> 5.63).

The logKoc to be used for risk assessment is set at the maximum value in EUSES which is 6 in a worst case approach.

Additional information