Registration Dossier
Registration Dossier
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EC number: 208-482-6 | CAS number: 530-48-3
Biodegradation in water: screening tests
Administrative data
- 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:
- other: GLP study according EU/OECD guideline.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 998
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 1,1-diphenylethylene
- EC Number:
- 208-482-6
- EC Name:
- 1,1-diphenylethylene
- Cas Number:
- 530-48-3
- Molecular formula:
- C14H12
- IUPAC Name:
- (1-phenylethenyl)benzene
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 34.5 - 35 mg/L
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- mean values
- Value:
- 4
- Sampling time:
- 8 d
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- mean values
- Value:
- 5
- Sampling time:
- 14 d
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- mean values
- Value:
- 8
- Sampling time:
- 21 d
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- mean values
- Value:
- 12
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The test substance is not readily biodegradable under the conditions of this test. Significant biodegradation was not detected.
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