Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Reliable guideline biodegradation screening studies are available.

In an assessment of ready biodegradability by sewage treatment micro-organisms, ethoxypropanol attained 68% degradation after 28 days as measured by oxygen consumed. The biodegradation curve showed that degradation exceeded 60% within 10 days of the degradation attaining 10%; therefore satisfying the 10-day window validation criterion cited in the OECD guidelines. Accordingly, ethoxypropanol is considered to be readily biodegradable under the conditions of this test.

In an assessment of ready biodegradability by activated sewage sludge micro-organisms, ethoxypropanol attained 78% degradation after 28 days as indicated by daily oxygen consumption. Degradation of the test material exceeded 10% on day 6 of the study and attained 60% on day 15; therefore satisfying the 10-day window validation criterion cited in the OECD guidelines. Accordingly, ethoxypropanol is considered to be readily biodegradable under the conditions of this test.