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EC number: 406-640-0 | CAS number: 136920-07-5 KEROFLUX ES 3241
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- Version / remarks:
- Directive 79/831/EEC, Annex V, CY, Part IV, Manometric Respirometry
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- The activated sludge inoculum used in this study originated from laboratory wastewater treatment plants fed with municipal sewage. The concentration of dry substance was 30 mg/L.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 100.8 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Reference substance:
- aniline
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0 - 10
- Sampling time:
- 28 d
- Details on results:
- Abiotic processes in a batch without inoculum:
O2*100/COD = 2 % - Parameter:
- BOD5
- Value:
- 0 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 2 221 mg O2/g test mat.
- Parameter:
- ThOD
- Value:
- 2 024 mg O2/g test mat.
- Results with reference substance:
- Kinetic of control substance (in %):
= 63 after 9 day(s) - Interpretation of results:
- under test conditions no biodegradation observed
Reference
The inoculum was not significantly inhibited by the test substance- Abiotic processes in a batch without inoculum: 2 % Pretests:
---------
Elementary analysis C = 79.5% C
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
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