Registration Dossier
Registration Dossier
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EC number: 459-330-2 | CAS number: -
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 04/02/1994 - 25/03/1994
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 994
- Report date:
- 1994
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether
- EC Number:
- 609-858-6
- Cas Number:
- 406-78-0
- Molecular formula:
- C4H3F7O
- IUPAC Name:
- 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether
- Test material form:
- liquid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, adapted
- Details on inoculum:
- Sludge was sampled from 10 locations.
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 2
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Executive summary:
An OECD 301c study was performed to determine whether the test substance was readily biodegradable, by measuring oxygen consumption in adapted activated sludge. After 28 days, a mean value of 2% biodegradation had occurred, indicating that the test substance is not considered to be readily biodegradable.
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