Registration Dossier
Registration Dossier
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EC number: 265-741-6 | CAS number: 65405-70-1
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:
- 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP compliant study conducted according to OECD Guidelines, with no or minor deviations.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- (E)-4-decenal
- EC Number:
- 265-741-6
- EC Name:
- (E)-4-decenal
- Cas Number:
- 65405-70-1
- Molecular formula:
- C10H18O
- IUPAC Name:
- (E)-4-decenal
- Test material form:
- other: liquid
- Details on test material:
- Batch VE00095676
Purity 98.6%
Expiration date February 14, 2011
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 33 d
Initial test substance concentration
- Initial conc.:
- ca. 20 mg/L
- Based on:
- test mat.
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 77
- Sampling time:
- 28 d
- Remarks on result:
- other: in the test conditdions (22°C)
- Parameter:
- % degradation (O2 consumption)
- Value:
- 78
- Sampling time:
- 33 d
- Remarks on result:
- other: in the test conditdions (22°C)
- Details on results:
- The 10-day window criterion is also fulfilled (22% biodegradation on day 1 and 65% on day 11).
Decenal-4-trans did not inhibit the intrinsic respiration of inoculum at the test concentration and was therefore considered to be non toxic to the inoculum at the test concentration.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Thus, Decenal-4-trans should be regarded as readily biodegradable according to this test.
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