Registration Dossier
Registration Dossier
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EC number: 473-100-9 | CAS number: -
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:
- 2006
- Reliability:
- 1 (reliable without restriction)
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 006
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: 92/69/EWG, C.4-C (CO2-Entw.); OECD 301-B (1992)
- Deviations:
- no
- GLP compliance:
- yes
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
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.:
- 17 mg/L
- Based on:
- test mat.
Reference substance
- Reference substance:
- other: Sodium acetate
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- ca. 5
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance):
0 % degradation after 2 d
0 % degradation after 5 d
1 % degradation after 7 d
1 % degradation after 9 d
1 % degradation after 14 d
3 % degradation after 19 d
4 % degradation after 23 d
4 % degradation after 27 d
5 % degradation after 29 d
BOD5 / COD results
- Results with reference substance:
- Points of degradation plot (reference substance):
12 % degradation after 2 d
42 % degradation after 5 d
61 % degradation after 7 d
70 % degradation after 9 d
77 % degradation after 14 d
84 % degradation after 19 d
90 % degradation after 23 d
95 % degradation after 27 d
100 % degradation after 29 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The substance was not readily biodegradable under the condtions of the modified Sturm test presently performed.
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