Registration Dossier
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EC number: 279-317-3 | CAS number: 79828-43-6
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
- Study period:
- 1986
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.5 (Degradation: Biochemical Oxygen Demand)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.6 (Degradation: Chemical Oxygen Demand)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: Ciba internal method A-15 and A-22
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- Sludge was consumed on day 13 following sampling
- Duration of test (contact time):
- 5 d
- Initial conc.:
- 200 mg/L
- Based on:
- not specified
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- None
- Preliminary study:
- None
- Test performance:
- None
- Remarks on result:
- not measured/tested
- Details on results:
- None
- Parameter:
- BOD5
- Value:
- 17 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 709 mg O2/g test mat.
- Parameter:
- BOD5*100/COD
- Value:
- 2.4
- Results with reference substance:
- None
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- FAT 40210 was not readily biodegradable (2 % within 5 days).
- Executive summary:
A study was performed to determine the biodegradation of FAT 40210 in water according to EU method C.5 and C.6.
The BOD was found to be 17 mg O2/g test mat.
The COD was found to be 709 mg O2/g test mat.
Under the conditions of this test (BOD5/COD) FAT 40210 was not readily biodegradable (2 % within 5 days).
Reference
The COD determined was equivalent to 99 % of theoretical oxygen demand (ThOD).
Description of key information
FAT 40210 is neither readily nor inherently biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
A study was performed to determine the biodegradation of FAT 40210 in water according to EU method C.5 and C.6.
The BOD was found to be 17 mg O2/g test mat.
The COD was found to be 709 mg O2/g test mat.
Under the conditions of this test (BOD5/COD) FAT 40210 was not readily biodegradable (2 % within 5 days).
Relevant is the BOD5/COD quotient which is equivalent to 0, therefore the substance is not indicative of rapid degradation.
Taking into consideration the data from all the studies, the test substance FAT 40210 is considered to be not biodegradable.
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