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EC number: 202-225-1 | CAS number: 93-17-4
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: GLP, guideline study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 3,4-dimethoxyphenylacetonitrile
- EC Number:
- 202-225-1
- EC Name:
- 3,4-dimethoxyphenylacetonitrile
- Cas Number:
- 93-17-4
- Molecular formula:
- C10H11NO2
- IUPAC Name:
- 3,4-dimethoxyphenylacetonitrile
- Details on test material:
- - Name of test material (as cited in study report): 3,4-dimethoxyphenylacetonitrile
- Lot/batch No.: 011924AX10
- Analytical purity: 98.6 %
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge (30 mg dry substance/ml) from laboratory wastewater plant treating municipal sewage.
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
- Initial conc.:
- 29.3 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 90 - 100
- Sampling time:
- 28 d
- Details on results:
- Kinetic of test substance (in %):
< 0 after 7 day(s)
ca. 49 after 10 day(s)
ca. 90 after 14 day(s)
ca. 95 after 21 day(s)
ca. 98 after 28 day(s)
Kinetic of control substance (in %):
= 80 ... 90 after 14 day(s)
Applicant's summary and conclusion
- Interpretation of results:
- readily biodegradable
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