Registration Dossier
Registration Dossier
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EC number: 606-793-5 | CAS number: 21535-43-3
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:
- 1999-03-22
- 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:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- 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:
- N-(2-benzylphenyl)-2-chloroacetamide
- EC Number:
- 606-793-5
- Cas Number:
- 21535-43-3
- Molecular formula:
- C15 H14 Cl N O
- IUPAC Name:
- N-(2-benzylphenyl)-2-chloroacetamide
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, adapted
- Duration of test (contact time):
- 28 d
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0
- Sampling time:
- 2 d
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0.2
- Sampling time:
- 9 d
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 1.6
- Sampling time:
- 27 d
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 3.1
- Sampling time:
- 29 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- In conclusion the test item was not readiliy biodegradable under the conditions of the CO2 evolution test (modified storm test) .
The pass value of 60% of ThCO2 was not reached in a 10-d window within the 28-d period of the test. In addition the test substance did not reach the degree of 10 % ThCO2 comprising the starting point of the 10 days window. The test substance is deemed to be not readily biodegradable.
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