Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Four guideline ready biodegradation studies are available to 3 different methods. Two were duplicate determinations to the same protocol. In a closed bottle test, the substance reached 68% degradation after 28 days but did not meet the 10 day window criteria of 60%. The modified sturm test (CO2 evolution) was repeated in duplicate. Both showed degradation of >75% after 28 days but only one met the 10 day window criteria. Since the average of these two results did meet the 10 day criteria, it can be concluded that 2 -(2 -methoxyethoxy)ethanol is readily biodegradable and does meet the 10 day window, although this is marginal. However another study using this method showed rapid and 100% degradation after 28 days. A conclusion of ready biodegradability is also supported by QSAR modelling.

As the substance is identified as readily biodegradable in the screening studies, further biodegradation testing is not scientifically justified.

Categories Display