Registration Dossier
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EC number: 701-362-9 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Two screening test were performed to assess the biodegradability of the test substance in water.
In the first test, a biodegradation of 21% was reached at Day 28.
In the second test, a biodegradation of 20% was also reached at Day 28. The test was extended up to Day 60. A biodegradation of 61% was obtained at this date.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, fulfilling specific criteria
Additional information
Two screening test were performed according to OECD 301B and D testing guidelines to assess the biodegradability of the test substance in water. The first one used non-adapted activated sludge as source of inoculum whereas non-adapted river water was used in the second.
The test item attained 21% and 20% of biodegradation after 28 days, respectively. The second test was extended and a biodegradation of 61% were reached at Day 60, respectively. Therefore, the test item cannot be considered to be readily biodegradable under the strict terms and conditions of OECD 301B and D testing guidelines. However, the biodegradation continued after Day 28 to reach value higher than 60% indicating a high potential for ultimate biodegradation. Therefore, the test item was considered to be inherently biodegradable and fulfilling specific criteria.
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