Registration Dossier
Registration Dossier
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EC number: 218-143-4 | CAS number: 2052-15-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Readily biodegradable
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
The aerobic biodegradation of the substance was evaluated according to the OECD 301F and EU Method C.4 -D. A measured volume of inoculated mineral medium, containing a known concentration of test item as the nominal sole source of organic carbon, is stirred in a closed flask at a constant temperature for 28 days. The consumption of oxygen is determined from the change in pressure in the apparatus. Evolved carbon dioxide is absorbed in soda lime. The amount of oxygen taken up by the microbial population during biodegradation of the test item (corrected for uptake by blank inoculum, run in parallel) is expressed as a percentage of Theoretical Oxygen De-mand (ThOD). A positive, abiotic and toxicity control run in parallel.
All validity criteria were met.
Degradation at the end of the test was 68.9 % and degradation at the end of 10-day-window 60.4 %
Therefore, when applying the 10-day-window, the substance is considered as readily biodegradable.
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