Registration Dossier
Registration Dossier
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EC number: 250-061-4 | CAS number: 30124-94-8
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1987
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 987
- Report date:
- 1987
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 2-[[4-[(2-cyano-3-nitrophenyl)azo]-m-tolyl](2-acetoxyethyl)amino]ethyl acetate
- EC Number:
- 250-061-4
- EC Name:
- 2-[[4-[(2-cyano-3-nitrophenyl)azo]-m-tolyl](2-acetoxyethyl)amino]ethyl acetate
- Cas Number:
- 30124-94-8
- Molecular formula:
- C21H21N5O6
- IUPAC Name:
- 2-[[4-[(2-cyano-3-nitrophenyl)azo]-m-tolyl](2-acetoxyethyl)amino]ethyl acetate
- Test material form:
- solid
- Details on test material:
- Terasil Rot 3BLN
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 46 mg/L
- Based on:
- TOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- TOC removal
Results and discussion
% Degradation
- Parameter:
- % degradation (TOC removal)
- Value:
- 62
- Sampling time:
- 28 d
BOD5 / COD results
BOD5 / CODopen allclose all
- Parameter:
- COD
- Value:
- 1 386 mg O2/g test mat.
- Parameter:
- BOD5
- Value:
- 25 mg O2/g test mat.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- inherently biodegradable, not fulfilling specific criteria
- Conclusions:
- The substance is considered to be inherently biodegradable. However, it cannot be excluded that the substance immediately adsorbed to activated sludge particles. The COD/BOD5 measurements do not indicate any potential for ready biodegradation.
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