Registration Dossier
Registration Dossier
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EC number: 205-457-1 | CAS number: 141-10-6
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:
- other: Non-GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 989
- Report date:
- 1989
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- 6,10-dimethylundeca-3,5,9-trien-2-one
- EC Number:
- 205-457-1
- EC Name:
- 6,10-dimethylundeca-3,5,9-trien-2-one
- Cas Number:
- 141-10-6
- Molecular formula:
- C13H20O
- IUPAC Name:
- 6,10-dimethylundeca-3,5,9-trien-2-one
- Details on test material:
- - Name of test material (as cited in study report): Pseudoionon
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Municipal activated sludge taken from a laboratory wastewater treatment plant fed with municipal sewage. 30 mg/l dry matter.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 45 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 water, 10 ml inoculum, 45 mg/l test substance (36 mg/l DOC)
TEST SYSTEM
- Culturing apparatus: Sapromat
CONTROL AND BLANK SYSTEM
- Inoculum blank: 2
- Abiotic sterile control: 1
- Toxicity control: 1
- Reference substance: 1 (100 mg/l)
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 60 - 70
- Sampling time:
- 28 d
- Details on results:
- Kinetic of test substance (in %):
= 18 after 6 day(s)
= 53 after 9 day(s)
= 58 after 11 day(s)
= 65 after 13 day(s)
= 66 after 20 day(s)
BOD5 / COD results
- Results with reference substance:
- 77 % BOD*100/ThOD
Applicant's summary and conclusion
- Interpretation of results:
- readily biodegradable
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