Registration Dossier
Registration Dossier
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EC number: 601-639-3 | CAS number: 119851-28-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: GLP-Study with acceptable deviations
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 988
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- yes
- Remarks:
- Reduced volume of the test solution
- GLP compliance:
- yes
Test material
- Reference substance name:
- 1-[2-chloro-4-(4-chlorophenoxy)phenyl]ethanone
- EC Number:
- 601-639-3
- Cas Number:
- 119851-28-4
- Molecular formula:
- C14H10Cl2O2
- IUPAC Name:
- 1-[2-chloro-4-(4-chlorophenoxy)phenyl]ethanone
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Bacteria collected from activated sludge of the sewage treatment plant of CH 4153-Reinach
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- test mat.
- Initial conc.:
- 10 mg/L
- Based on:
- test mat.
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 11
- Sampling time:
- 28 d
- Remarks on result:
- other: 10 mg test substance/L
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0
- Sampling time:
- 28 d
- Remarks on result:
- other: 20 mg test substance/L
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The TS in not readily biodegradable.
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