Registration Dossier
Registration Dossier
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EC number: 606-711-8 | CAS number: 211385-45-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- other information
- Study period:
- February 8th, 2000 - March 7th, 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 000
- Report date:
- 2000
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Version / remarks:
- adopted July 17th, 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Test material form:
- solid
- Specific details on test material used for the study:
- Purity: 95.6 % [w/w]
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Source: Municipal sewage treatment plant, D-31137 Hildesheim
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 4 mg/L
- Based on:
- test mat.
- Initial conc.:
- 2.12 mg/L
- Based on:
- ThOD
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- acetic acid, sodium salt
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 7 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 14 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 21 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 6
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- Functional control (10 mg/L): 82% (7d), 85% (28d)
Toxicity control (2 mg/L test item + 5 mg/L reference item): 35% (7d), 49% (28d)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The test item must be regarded to be not readily biodegradable.
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