Registration Dossier
Registration Dossier
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EC number: 670-981-3 | CAS number: 80806-68-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 000
- Report date:
- 2000
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- no
- Remarks:
- The study was conducted according to the test guidelines in effect at the time of study conduct.
- GLP compliance:
- yes
Test material
- Reference substance name:
- 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctan-1-ol
- EC Number:
- 211-477-1
- EC Name:
- 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctan-1-ol
- Cas Number:
- 647-42-7
- Molecular formula:
- C8H5F13O
- IUPAC Name:
- 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctan-1-ol
- Details on test material:
- - Purity: not reported
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 40 mg/L
- Based on:
- test mat.
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 21
- Sampling time:
- 28 d
- Remarks on result:
- other: Replicate 1
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0
- Sampling time:
- 28 d
- Remarks on result:
- other: Replicate 2
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The test item was determined to be not readily biodegradable in the 10-day window and after 28 days.
- Executive summary:
The test substance was evaluated for ready biodegradability according to OECD 301B. The study report provides details of the procedures and analytical methods. The results are well documented and the test is valid.
The 10% level (beginning of biodegradation) was reached only in one replicate after a long lasting adaptation phase of 19 days. In this replicate the biodegradation came to a maximum of 21% after 28 days. In the 2nd replicate the biodegradation remained at a level of 0%.
The test item must be regarded to be not readily biodegradable in the 10-day window and after 28 days.
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