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:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- Silybum marianum extract
- Molecular formula:
- Not applicable
- IUPAC Name:
- Silybum marianum extract
- Test material form:
- liquid
- Details on test material:
- The test matérial contains 0.5% of tocophérol for stability
1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- > 0 - < 28 d
Initial test substance concentration
- Initial conc.:
- ca. 19 other: mg
Reference substance
- Reference substance:
- not specified
Results and discussion
% Degradationopen allclose all
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 11
- Sampling time:
- 1 d
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 29
- Sampling time:
- 3 d
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 62
- Sampling time:
- 10 d
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- 89
- Sampling time:
- 28 d
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 94
- Sampling time:
- 28 d
- Details on results:
- The experience is valid because:
The difference between the biodegradation values of the replicates is less than 20%.
The oxygen consumption in the control series is less than 60 mg / l at the end of the test.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The test item reaches the 60% threshold of biodegradation in 10 days with biodegradation between 80% and 90% after 28 days and is therefore "easily biodegradable" according to OECD criteria.
- Executive summary:
The objective of this work is the determination of the biodegradation of LIPOLAMI milk thistle ER according OECD 301F method.
The test item reaches the 60% threshold of biodegradation in 10 days with biodegradation between 80% and 90% after 28 days and is therefore "easily biodegradable" according to OECD criteria.
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