Registration Dossier
Registration Dossier
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EC number: 284-183-4 | CAS number: 84803-57-6
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study performed in accordance with OECD Guideline and compliant with GLP criteria.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 002
- Report date:
- 2002
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- (4-tert-butyl-2,6-dimethylphenyl)acetonitrile
- EC Number:
- 284-183-4
- EC Name:
- (4-tert-butyl-2,6-dimethylphenyl)acetonitrile
- Cas Number:
- 84803-57-6
- Molecular formula:
- C14H19N
- IUPAC Name:
- 2-(4-tert-butyl-2,6-dimethylphenyl)acetonitrile
- Details on test material:
- - Substance name: 4-tert-Butyl-2,6-dimethylphenylacetonitrile
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- Activated sludge from Iaboratory wastewater plant treating municipal sewage. Conc. of dry substance is ca. 30 mg/L.
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 24 mg/L
- Based on:
- test mat.
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
Results and discussion
% Degradation
- Value:
- < 10
- Sampling time:
- 28 d
Any other information on results incl. tables
Test concentration is equivalent to 20 mg/L TOC. Since the test substance is poorly soluble in water, no DOC degradation was determined.
Applicant's summary and conclusion
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