Registration Dossier
Registration Dossier
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EC number: 201-612-2 | CAS number: 85-52-9
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 100 mg/L
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Parameter followed for biodegradation estimation:
- O2 consumption
- Reference substance:
- benzoic acid, sodium salt
- Key result
- Parameter:
- other: ThOD
- Remarks:
- Mean
- Value:
- 1.03
- Sampling time:
- 28 d
- Details on results:
- Percentage biodegradation at 28 days :
- exp 1 = 0%
- exp 2 = 0.88 %
- exp 3 = 2.20%
- control 1 = 28.99%
- control 2 = 30.91%
- reference substance 1 = 94.35%
- reference substance 2 = 97.34% - Validity criteria fulfilled:
- no
- Remarks:
- variation between the test item replicates > 20%. The data of the first test are not presented.
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The biodegradation potential was determined according to the OECD 301F guideline. Based on the ThOD, the 10-day window failed and the degradation rate of the test item is 1.30% after 28 days. Regarding this result, the test item is not considered to be biodegradable.
- Executive summary:
The biodegradation potential was determined according to the OECD 301F guideline. Based on the ThOD, the 10-day window failed and the degradation rate of the test item is 1.30% after 28 days. Regarding this result, the test item is not considered to be biodegradable.
Reference
Description of key information
The biodegradation potential was determined according to the OECD 301F guideline. Based on the ThOD, the 10-day window failed and the degradation rate of the test item is 1.30% after 28 days. Regarding this result, the test item is not considered to be biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
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