Registration Dossier
Registration Dossier
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EC number: 207-950-7 | CAS number: 502-69-2
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)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 992
- Report date:
- 1992
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 6,10,14-trimethylpentadecan-2-one
- EC Number:
- 207-950-7
- EC Name:
- 6,10,14-trimethylpentadecan-2-one
- Cas Number:
- 502-69-2
- Molecular formula:
- C18H36O
- IUPAC Name:
- 6,10,14-trimethylpentadecan-2-one
- Details on test material:
- - Name of test material (as cited in study report): Hexahydrofarnesylaceton
- Physical state: liquid
- Analytical purity: 96.5 %
- Impurities (identity and concentrations): 2 % Hexahydrofarnesylacetol, 1.5 % unknown substances (at least 12 components)
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Initial cell/biomass concentration: 30 mg/l
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 83.4 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Composition of medium: 240 ml nutrient medium, 10 ml inoculum,
- Test temperature: 20 - 25 °C
TEST SYSTEM
- Culturing apparatus: Sapromat
- Number of culture flasks/concentration: 1
SAMPLING
- Sampling frequency: daily
CONTROL AND BLANK SYSTEM
- Inoculum blank: 2
- Abiotic sterile control: 1
- inhibition control: 1
- Reference control: 1
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0 - 10
- Sampling time:
- 4 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 20 - 30
- Sampling time:
- 5 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 50 - 60
- Sampling time:
- 14 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 60 - 70
- Sampling time:
- 17 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 70 - 80
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- Day 3: 0 - 10 %
Day 4: 10 - 20 %
Day 6: 60 - 70 %
Day 7: 70 - 80 %
Day 28: 90 - 100 %
Applicant's summary and conclusion
- Interpretation of results:
- other: not readily biodegradable
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