Registration Dossier
Registration Dossier
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EC number: 466-280-5 | CAS number: 67643-70-3
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:
- 2004
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- -
- EC Number:
- 466-280-5
- EC Name:
- -
- Cas Number:
- 67643-70-3
- Molecular formula:
- C13H23NO2
- IUPAC Name:
- 3,7-dimethylocta-1,6-dien-3-yl N,N-dimethylcarbamate
- Details on test material:
- Batch 9000575061
Purity: 97.4%
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 69
- Sampling time:
- 28 d
- Details on results:
- The 10 day window criterion is not fulfilled (13% biodegradation on day 2 and 58% on day 12).This should be attributed to the structure of the test substance; GR-86-0999 undergoes rapid, abiotic primary degradation (hydrolysis, isomerisation and decarboxylation) in the test conditions. Therefore the test substance is not viewed as a single substance by microorganisms. The products of the primary degradation are sequentially degraded, often by different microroganisms. The 10-Day window criterion should therefore not be used as a pass fail criterion, and , under these circumtances can be waived.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Thus, GR-86-0999 should be regarded as readily biodegradable according to this test.
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