Registration Dossier
Registration Dossier
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EC number: 266-719-9 | CAS number: 67564-91-4
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:
- 2 003
- Report date:
- 2003
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:
- cis-4-[3-(p-tert-butylphenyl)-2-methylpropyl]-2,6-dimethylmorpholine
- EC Number:
- 266-719-9
- EC Name:
- cis-4-[3-(p-tert-butylphenyl)-2-methylpropyl]-2,6-dimethylmorpholine
- Cas Number:
- 67564-91-4
- Molecular formula:
- C20H33NO
- IUPAC Name:
- (2R,6S)-4-[3-(4-tert-butylphenyl)-2-methylpropyl]-2,6-dimethylmorpholine
Constituent 1
- Specific details on test material used for the study:
- Batch nr.: WF 19405; production date: 13.03.2002
purity: 100%
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- Municipal activated sludge from the waste water treatment plant of Mannheim/Baden-Württemberg (Germany), stored in laboratory wastewater treatment plant which was fed with municipal sewage. The sludge was washed
and aerated for 24 hours and then added to the test vessels to obtain a sludge concentration of 30 mg/l dry substance. - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- < 10
- Sampling time:
- 28 d
- Details on results:
- - ThOD = 2852 mg/g (calculated from analysis of the elements:
C=792 mg/g, H=109 mg/g, O=53 mg/g, N=46 mg/g);
- degree of degradation in the abiotic control: < 10%;
- degree of substance specific elimination (28 days): < 10%
(primary biodegradation);
Kinetic of test substance (in %):
ca. 0 after 7 day(s)
ca. 0 after 14 day(s)
ca. 0 after 21 day(s)
ca. 0 after 28 day(s);
Kinetic of control substance (in %):
= 60 ... 70 after 7 day(s)
= 70 ... 80 after 14 day(s)
Applicant's summary and conclusion
- Interpretation of results:
- other: BOD of ThOD; poorly biodegradable
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