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Registration Dossier
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EC number: 257-884-8 | CAS number: 52372-36-8
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening test, other
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1980
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 980
- Report date:
- 1980
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.5 (Degradation: Biochemical Oxygen Demand)
- GLP compliance:
- no
Test material
- Reference substance name:
- 3-(diethylamino)-7-imino-7H-[1]benzopyrano[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile
- EC Number:
- 257-885-3
- EC Name:
- 3-(diethylamino)-7-imino-7H-[1]benzopyrano[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile
- Cas Number:
- 52372-39-1
- Molecular formula:
- C23H19N5O
- IUPAC Name:
- 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile
- Test material form:
- solid
- Details on test material:
- Disperse Red 277
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Duration of test (contact time):
- 5 d
Initial test substance concentration
- Initial conc.:
- 1 g/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Results and discussion
% Degradation
- Parameter:
- other: BOD5
- Remarks on result:
- other: see BOD5 and COD
BOD5 / COD results
BOD5 / CODopen allclose all
- Parameter:
- BOD5
- Value:
- 40 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 1 310 mg O2/g test mat.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- Based on the COD and BOD5 measurements, a ratio of 0.03 was calculated. The test item does not show any potential for biodegradation.
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