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EC number: 257-827-7 | CAS number: 52301-70-9
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:
- 1974
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Basic data given, acceptable for assessment
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Standard test according to internal SOP.
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- water (not specified)
- Details on study design:
- None
- Remarks on result:
- not measured/tested
- Parameter:
- BOD5
- Value:
- 240 mg O2/g test mat.
- Results with reference substance:
- None
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- BOD: 240 mg O2/g test mat.
- Executive summary:
A study was performed to determine the ready biodegradation of the test item. The BOD of the test item is: 240 mg O2/g test mat.
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1974
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Basic data given, acceptable for assessment
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Standard test according to internal SOP.
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- water (not specified)
- Details on study design:
- None
- Remarks on result:
- not measured/tested
- Key result
- Parameter:
- COD
- Value:
- 586 mg O2/g test mat.
- Results with reference substance:
- None
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- COD: 586 mg O2/g test mat.
- Executive summary:
A study was performed to determine the ready biodegradation of the test material.
COD: 586 mg O2/g test mat.
Referenceopen allclose all
None
None
Description of key information
The ready biodegradability of the substance was determined.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
A key study was performed to determine the ready biodegradation of the substance. The Chemical Oxygen Demand of the test item was determined to be 586 mg/g O2, whereas the Biological Oxygen Demand of the substance was determined to be 0 mg/g O2. Correspondingly, the calculation of the BOD5/COD quotient cannt be performed and is regarded as zero.
In the supporting studies, the Chemical Oxygen Demand of the test item was determined to be 897 mg/g O2, whereas the Biological Oxygen Demand of the test item was determined to be 240 mg/g O2. The corresponding BOD5/COD quotient is about 0.27 indicating the test substance to be not biodegradable.
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