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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The test substance Bis(2-ethylhexyl) carbonate is readily biodegradable

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

There are two experimental studies on biodegradability of Bis(2-ethylhexyl) carbonate available.

In a study performed according to the OECD Guideline 301 F"Manometric Respirometry Test“ the test substance was proved to be readily biodegradable. The biodegradation of the test substance was found to be 83 % at a concentration of 20 mg/L and 67 % at a concentration of 100 mg/L after 28 days. For a concentration of 20 mg/L biodegradation within the 10-day-window was found to be 78 %. For a concentration of 100 mg/L biodegradation within the 10-day-window was found to be 53 %. Here to mention is that the test item suspension with a concentration of 20 mg/L already meets the criteria of 50 - 100 mg ThOD or COD/L, as demanded in the guideline.

In a study performed according to OECD Guideline 301B 'Modified Sturm Test/CO2 Evolution Test the test substance (at test concentrations of 20 mg/L) proved to be readily biodegradable but failing the 10-d window criterion (60 -85% biodegradation after 28 days). The difference of extremes of replicate values of removal of the test item at the end of the test was slightly > 20%.

At the tested concentrations no inhibitory effects of the test substance were observed.

Based on the results of Manometric Respirometry test no significant abiotic degradation of the test substance was noticeable after 28 days of incubation.