Registration Dossier
Registration Dossier
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EC number: 435-080-1 | CAS number: 1070-64-0 6,8-DICHLORETHYLCAPRYLAT; ETHYL-6,8 DICHLORO OCTANOATE
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 Jan 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
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:
- EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Ethyl 6,8-dichlorooctanoate
- EC Number:
- 435-080-1
- EC Name:
- Ethyl 6,8-dichlorooctanoate
- Cas Number:
- 1070-64-0
- Molecular formula:
- C10H18Cl2O2
- IUPAC Name:
- ethyl 6,8-dichlorooctanoate
- Test material form:
- liquid
Constituent 1
- Specific details on test material used for the study:
- Batch: Ds 1099
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 15 mg/L
- Based on:
- TOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 72
- Sampling time:
- 15 h
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- According to the Guidelines a substance giving a result greater than 60% degradation within 28 days is regarded as "readily biodegradable".
The test substance 6,8-dichloroethylcaprylat was degraded by 75,5% after 28 days of incubation. The 10-d window as definded by the guideline started at ca. Day 2. 60% degradation was exceeded already at Day 8. - Executive summary:
According to the Guidelines a substance giving a result greater than 60% degradation within 28 days is regarded as "readily biodegradable".
The test substance 6,8-dichloroethylcaprylat was degraded by 75,5% after 28 days of incubation. The 10-d window as definded by the guideline started at ca. Day 2. 60% degradation was exceeded already at Day 8.
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