Registration Dossier
Registration Dossier
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EC number: 206-775-3 | CAS number: 374-27-6
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:
- 19/04/2018 - 17/05/2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- yes
- Remarks:
- The dissolved oxygen concentration of the saturated test item stock solution prior to dosing was 6.64 mg O2/L. Although this was below 7.0 mg O2/L it was considered that the level of 6.64 mg O2/L was high enough to be able to set the study up.
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 3,3,4,4,4-pentafluorobut-1-ene
- EC Number:
- 206-775-3
- EC Name:
- 3,3,4,4,4-pentafluorobut-1-ene
- Cas Number:
- 374-27-6
- Molecular formula:
- C4H3F5
- IUPAC Name:
- 3,3,4,4,4-pentafluorobut-1-ene
- Test material form:
- gas
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic, non-adapted
- Details on inoculum:
- Test media a to d were inoculated with sewage treatment micro-organisms at a rate of 1 drop of inoculum per liter.
Initial test substance concentration
- Initial conc.:
- >= 2.98 - <= 2.98 mg/L
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- >= -10 - <= 5
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Conclusions:
- The test item attained 0% biodegradation after 28 days and therefore cannot be considered as readily biodegradable under the strict terms and conditions of OECD Guideline No. 301D.
- Executive summary:
The test item attained 0% biodegradation after 28 days and therefore cannot be considered as readily biodegradable under the strict terms and conditions of OECD Guideline No. 301D.
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