Registration Dossier
Registration Dossier
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EC number: 228-809-6 | CAS number: 6359-83-7
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 28 Jan - 26 Feb 1975
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 975
- Report date:
- 1975
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- Disodium 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoate
- EC Number:
- 228-809-6
- EC Name:
- Disodium 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoate
- Cas Number:
- 6359-83-7
- Molecular formula:
- C17H14N4O6S.2Na
- IUPAC Name:
- disodium 2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoate
- Test material form:
- solid: particulate/powder
1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Details on inoculum:
- Laboratory wastewater treatment plant
- Duration of test (contact time):
- 29 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 54.8 mg/L
- Based on:
- test mat.
- Initial conc.:
- 20 mg/L
- Based on:
- TOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- TOC removal
Reference substance
- Reference substance:
- not specified
Results and discussion
% Degradation
- Parameter:
- % degradation (TOC removal)
- Value:
- 0
- Sampling time:
- 29 d
BOD5 / COD results
BOD5 / CODopen allclose all
- Parameter:
- BOD5
- Value:
- 0 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 1 008 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:
- The substance is not biodegradable. Neither BOD5 and COD nor the biological elimination test did indicate any potential for biodegradation.
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