Registration Dossier
Registration Dossier
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EC number: 227-478-5 | CAS number: 5856-77-9
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:
- 2 004
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-E (Determination of the "Ready" Biodegradability - Closed Bottle Test)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 2,2-dimethylbutyric acid
- EC Number:
- 209-865-0
- EC Name:
- 2,2-dimethylbutyric acid
- Cas Number:
- 595-37-9
- Molecular formula:
- C6H12O2
- IUPAC Name:
- 2,2-dimethylbutanoic acid
- Reference substance name:
- 2,2-dimethyl butanoic acid
- IUPAC Name:
- 2,2-dimethyl butanoic acid
Constituent 1
Constituent 2
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, predominantly domestic, non-adapted
- Duration of test (contact time):
- 28 d
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 1
- Sampling time:
- 7 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 3
- Sampling time:
- 14 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 6
- Sampling time:
- 21 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 9
- Sampling time:
- 28 d
- Details on results:
- The reference compound showed 79 % degradation after 14 days.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
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