Registration Dossier
Registration Dossier
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EC number: 426-400-9 | CAS number: 170222-39-6
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From October 23 to November 22, 1996
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1997
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
- Version / remarks:
- Modified Sturn Test, 1992
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Version / remarks:
- 1992
- GLP compliance:
- yes
Test material
- Reference substance name:
- Red RA 10463
- IUPAC Name:
- Red RA 10463
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 28 d
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
Reference substance
- Reference substance:
- other: sodium acetate
- Remarks:
- 80.2 mg
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- < 10
- Sampling time:
- 28 d
- Details on results:
- No significant (>10 %) degradation of test item occurred.
Theoretical CO2 production (ThCO2) was estimated to be 2.1 mg CO2 /mg.
In the toxicity control, the test item was found to be not inhibitory.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- No significant (up to 10 %) degradation occurred within 28 days, therefore, the substance is considered not readily biodegradable.
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