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EC number: 941-784-2 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1979
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: Method A-15
- Version / remarks:
- Comparable to international accepted guidelines.
- GLP compliance:
- no
- Specific details on test material used for the study:
- Identified as: FAT 21030/C
Purity : 85.2 % - Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 5 d
- Parameter followed for biodegradation estimation:
- O2 consumption
- Parameter:
- other: BOD
- Remarks on result:
- not measured/tested
- Parameter:
- BOD5
- Value:
- 0 mg O2/g test mat.
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- BOD5 of FAT 21030/C is 0 mg O2/g.
- Executive summary:
BOD5 of FAT 21030/C was determined according to in house Ciba Geigy Methode A.15, which is comparable to internationally accepted guidelines. Based on these investigations, the BOD5 of test substance was found to be 0 mg O2/g.
Considering the COD value determined with the test substance which is 1271 mg O2/g, the resulting BOD5/COD quotient is also zero, indicating that the test substance is unlikely to be biodegradable.
- Endpoint:
- biodegradation in water: screening tests
- Remarks:
- COD
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1979
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: Method A-16
- Version / remarks:
- Comparable to international accepted guidelines.
- GLP compliance:
- no
- Specific details on test material used for the study:
- Identified as: FAT 21030/C
Purity: 85.2 % - Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Parameter:
- other:
- Remarks on result:
- not measured/tested
- Details on results:
- not applicable
- Parameter:
- COD
- Value:
- 1 271 other: mg COD/gr
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- COD of FAT 21030/C is 1271 mg COD/g.
- Executive summary:
COD of FAT 21030/C was determined according to in house Ciba Geigy Method A.16. Based on the findings of the study, the COD of test substance was found to be 1271 mg O2/g.
Considering the BOD5 value determined with the test substance which is zero, the resulting BOD5/COD quotient is also zero, indicating that the test substance is unlikely to be biodegradable.
- Endpoint:
- biodegradation in water: screening tests
- Remarks:
- TOC removal
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1979
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: Method A-12
- Version / remarks:
- Comparable to international accepted guidelines.
- GLP compliance:
- no
- Specific details on test material used for the study:
- Identified as: FAT 21030/C
Purity : 85.2 % - Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- 31 d
- Initial conc.:
- 20 mg/L
- Parameter:
- % degradation (TOC removal)
- Value:
- 0
- Sampling time:
- 31 d
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- FAT 21030/C is not inherently biodegradable.
- Executive summary:
Inherent biodegradablity of FAT 21030/C was determined according to in house Ciba Geigy Methode A.13.
0 % biodegradation of FAT 21030/ was observed after 31 days exposure. Hence, FAT 21030/C is not inherently biodegradable under the conditions of this test.
Referenceopen allclose all
Description of key information
FAT 21030 was tested to be neither readily nor inherently biodegradeable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
Biodegradbility of FAT 21030 was tested over the years in several Zahn Wellen tests as well as tests evaluating Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD).
The BOD5/COD ratios for FAT 21030/C (0/1271), FAT 21030/B (0/1278) and FAT 21030/A (0/1017, 0/1091) were all equal to 0, hence indicating that the substance is not rapidly biodegradable.
In the available Zahn Wellen Tests with FAT 21030/C and FAT 21030/A, the bioelimination observed at the end of exposure period was 0 %.
Taking into consideration, the above information, FAT 21030 should regarded as not readily biodegradable.
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