Registration Dossier
Registration Dossier
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EC number: - | 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study and GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
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
- Name:
- Unnamed
- Type:
- Constituent
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: activated sludge from a biologic sewage treatment plant (mostly domestic)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 20 mg/L
- Based on:
- other: organic carbon (nominal)
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 57
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: moderately biodegradable
- Executive summary:
The test item Sa 190 / SAT-No. 080004 is considered as "moderately biodegradable". The degree of biodegradation reached 57 % after 28 days. The 10-day-window began on day 14, at its end, 46 % were reached, missing the pass level of 60 % given in the OECD guideline. Abiotic degradation was not observed.
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