Registration Dossier
Registration Dossier
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EC number: 801-093-8 | CAS number: 1315251-11-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Substance is not readily biodegradable and shows 20 % degradation in an OECD TG 301B.
Key value for chemical safety assessment
- Biodegradation in water:
- not biodegradable
- Type of water:
- freshwater
Additional information
Biodegradation in OECD TG 301B study - Key study
The biodegradation potential of the substance was investigated in a study in accordance with OECD TG 301B and in compliance with GLP criteria. The test was conducted under dark and aerobic conditions at 21 °C for 28 days. The concentration was 12.6 mg/L (10mg carbon/L) in activated sludge (domestic, non-adapted). The degradation was 23%, 31%, and 20% after 7, 14 and 28 days. Toxicity control attained 57% degradation after 14 days and 56% degradation after 28 days showing the substance not being toxic. Overall, it can be concluded that the substance is not readily biodegradable.
Biodegradation in an OECD TG 301F study - supporting study
The biodegradation potential of the substance was investigated in a study in accordance with OECD TG 301F and in compliance with GLP criteria. The test was conducted under dark and aerobic conditions at 20 °C for 28 days. The test concentration was 36.5 mg/L (equivalent to 96.5 mg ThOD/L) in activated sludge (domestic, adaptation not specified). The degradation was 1.0 % after 28 days. Toxicity control (Sodium benzoate) attained 84.4% degradation after 14 days and 86.6% degradation after 28 days. In the Toxicity Control (TC) test mixture, 39.3% biodegradation occurred within 14 days and the value exceeded 25% based on the total ThOD, which indicated that the test item can be assumed to not be inhibitory under the conditions of the test. Overall, it can be concluded that the substance is not readily biodegradable under the test conditions.
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