Registration Dossier
Registration Dossier
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EC number: 700-404-3 | CAS number: 127929-37-7
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:
- 2008-2009
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 2,2-bis({[3-(4-ethylpiperazin-1-yl)propanoyl]oxy}methyl)butyl 3-(4-ethylpiperazin-1-yl)propanoate
- EC Number:
- 700-404-3
- Cas Number:
- 127929-37-7
- Molecular formula:
- C33H62N6O6
- IUPAC Name:
- 2,2-bis({[3-(4-ethylpiperazin-1-yl)propanoyl]oxy}methyl)butyl 3-(4-ethylpiperazin-1-yl)propanoate
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, adapted
- Duration of test (contact time):
- > 1 - <= 29 d
Initial test substance concentration
- Initial conc.:
- >= 18.3 - <= 20 mg/L
- Based on:
- DOC
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- >= 13 - <= 16.6
- St. dev.:
- 1.8
- Sampling time:
- 28 d
- Details on results:
- The following data were determined for the test item B 1061:
10-day-window: not detected
degradation at the end of 10-day-windows: none
degradation at the end of the test: 15 %
demanded pass level: 60 % at the end of 10-day-window
Therefore, regardless of application of the 10-day-window, B 1061 is not readily biodegradable following OECD 301B/EU C.4-C.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily biodegradable
- Executive summary:
Results for the test item B 1061 are:
- The test item B 1061 is considered as " not readily biodegradable".
- The degree of biodegradation reached 15 % after 28 days.
- A 10 -day-window was not observed. The pass level of 60 % given in the OECD guideline was missed.
- The abiotic degradation reached 9 %.
- All validity criteria were met.
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