Registration Dossier
Registration Dossier
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EC number: 401-300-8 | CAS number: 86168-95-8
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Body responsible for the test
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Version / remarks:
- (May 1981)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38409 Dec. 1980
- Deviations:
- not specified
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Body responsible for the test
- IUPAC Name:
- Body responsible for the test
Constituent 1
Study design
- Oxygen conditions:
- not specified
- Inoculum or test system:
- not specified
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 10 mg/L
- Based on:
- test mat.
- Initial conc.:
- 20 mg/L
- Based on:
- test mat.
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 1
- Sampling time:
- 28 d
- Remarks on result:
- other: for initial concentration of 20 mg/L
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 9
- Sampling time:
- 28 d
- Remarks on result:
- other: for initial concentration of 10 mg/L
BOD5 / COD results
BOD5 / COD
- Parameter:
- COD
- Value:
- 1.78 g O2/g test mat.
Any other information on results incl. tables
Detailed results
| Day | 10 mg/L test substance [%] | 20 mg/l test substance [%] | aniline [%] |
| 5 | 2 | 0 | 1 |
| 9 | 2 | 0 | 51 |
| 13 | 5 | 1 | 78 |
| 16 | 5 | 1 | 82 |
| 19 | 5 | 1 | 85 |
| 22 | 7 | 1 | 86 |
| 27 | 8 | 1 | 89 |
| 28 | 9 | 1 | 93 |
- test substance is not biodegradable in this test
- in a dynamic bioelimination process (simulation test, aerobic sewage, coupled units test, OECD-guideline 303A, May 1981), the average elimination of the test substance was 83.8% of the initially measured concentration
- as the substance has been determined to be not biodegradable, the BOD was not determined in view of the other tests performed
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The substance is not biodegradable in this test.
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