Registration Dossier
Registration Dossier
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EC number: 480-320-9 | CAS number: -
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 2005-09-15 to 2005-10-14
- Reliability:
- 1 (reliable without restriction)
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Version / remarks:
- adopted 1992-07-17
- Deviations:
- no
- Principles of method if other than guideline:
- NA
- GLP compliance:
- yes (incl. QA statement)
Test material
- Details on test material:
- Batch no: EZ06-B001;
Constituent 1
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
NA
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, adapted
- Details on inoculum:
- The activated sludge was washed twice with autoclaved tab water and maintained in an aerobic condition by aeration for 4 hours and then homogenised with a mixer. Thereafter the sludge was filtered with folded filter and aerated with CO2-free air for 5 days. 25 ml/l were used to initiate inoculation.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 15 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- NA
Reference substance
- Reference substance:
- acetic acid, sodium salt
Results and discussion
- Preliminary study:
- NA
- Test performance:
- The functional and the toxicity control confirmed the validity of the test.
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 17
- Sampling time:
- 28 d
- Details on results:
- NA
BOD5 / COD results
- Results with reference substance:
- 34 % biodegradation occurred within 14 days and with a maximum of 43 % after 28 days.
Any other information on results incl. tables
NA
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not ready biodegradable
- Conclusions:
- The test item is not ready biodegradable.
- Executive summary:
The test item is not ready biodegradable.
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