Registration Dossier
Registration Dossier
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EC number: 277-552-6 | CAS number: 73612-29-0
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- 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
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- mixture of sewage, soil and natural water
- Details on inoculum:
- - Source of inoculum/activated sludge: sampled at 10 locations in Japan
- Concentration of sludge: 30 mg/L - Duration of test (contact time):
- 28 d
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Test temperature: 25 ± 1 °C
TEST SYSTEM
- Culturing apparatus: Asahi Techneion Co., Ltd.
- Number of culture flasks/concentration: 3
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes
- Toxicity control: yes - Reference substance:
- aniline
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 28 d
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
Reference
Description of key information
Poorly biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
One guideline study on the biodegradability of the substance is available. The study followed OECD guideline 301 C and was conducted with a mixture of sewage, soil and natural water as inoculum. The degradation rate after 28 days was 0 % based on O2 consumption of the inoculum (Dainippon Ink and Chemicals Inc., 2006).
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