Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The Determination of Ready Biodegradability (Biotic Degradation) using The CO2 Evolution Test (Modified Sturm OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test) was identified as the key study.  Only 2% biodegradation was observed after 28 days.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

In a key study conducted according to OECD Guideline 301B (Ready Biodegradability: CO2 Evolution Test), only 2% biodegradation was recorded in 28 days. In a supporting study, the measured biochemical oxygen demand according to a method referencing, "Determination of Biochemical Oxygen Demand" method of the US EPA, Method 405, 1979 and the "Degradation, Biochemical Oxygen Demand", Method C.5, EC, 1992. The 5-day BOD value was found to be less than 0.00038 g of oxygen per g of test substance. The 20-day BOD value was found to be 0.0011 g of oxygen per g of test substance at a 0.090 percent concentration. The BOD/COD ratio was found to be less than 0.00047. The COD was found to be 0.808 g/g of test substance. Based on these two studies the substance is found not to biodegrade.