Registration Dossier
Registration Dossier
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EC number: 700-677-9 | CAS number: 19190-61-5
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)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- methyl 2,2,3,3,4,4-hexafluoro-4-[(1,2,2-trifluoroethenyl)oxy]butanoate
- EC Number:
- 700-677-9
- Cas Number:
- 19190-61-5
- Molecular formula:
- C7H3F9O3
- IUPAC Name:
- methyl 2,2,3,3,4,4-hexafluoro-4-[(1,2,2-trifluoroethenyl)oxy]butanoate
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- ca. 100 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- >= 23 - <= 33
- Sampling time:
- 28 d
- Details on results:
- The test substance was converted by hydrolysis to an acid and methanol. Methanol was biodegraded, whereas the acid was not biodegraded by microorganisms.
BOD5 / COD results
- Results with reference substance:
- degradation after:
7d: 58%
14d: 73%
21d: 73%
28d: 72%
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Remarks:
- test substance hydrolyzes
- Interpretation of results:
- other: test substance hydrolyzes, just one resulting component was biodegraded.
- Conclusions:
- The test substance was converted by hydrolysis to an acid and methanol. Methanol was biodegraded, whereas the acid was not biodegraded by microorganisms.
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