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EC number: 227-022-5 | CAS number: 5601-29-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: screening tests
- Remarks:
- BOD5/COD
- Type of information:
- other: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Study period:
- January 17, 1978
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Internal standard procedure. Only short abstarct available.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Internal standard Procedure:
Nr A-16; Nr. A-15 - GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- ca. 5 d
- Initial conc.:
- ca. 500 mg/L
- Based on:
- not specified
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- For COD calculation:
Titer: 13.22 ml
Norm.: 0.2369 ml
blank value: 13.95 ml
Consumption: 3.36 ml
Sample weight: 5 ml - Remarks on result:
- not determinable
- Remarks:
- BOD5/COD test
- Parameter:
- BOD5
- Value:
- ca. 0 mg O2/g test mat.
- Parameter:
- COD
- Value:
- ca. 1 264 mg O2/g test mat.
- Parameter:
- BOD5*100/COD
- Value:
- ca. 0
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- BOD5 = 0 mg O2/g
COD = 1264 mg O2/g
BOD5/COD = 0 - Executive summary:
Method
The BOD5 and the COD of the test substance are determined by measuring the dissolved oxygen concentration before and after 5 days incubation at 20 °C in different test concentrations diluted in water saturated with dissolved oxygen that contains a seed of micro-organisms.
Conclusion
BOD5 = 0 mg O2/g
COD = 1264 mg O2/g
BOD5/COD = 0
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- other: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Study period:
- April 24, 1978
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Internal standard procedure. Only short abstarct available.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Internal standard Procedure:
Nr A-16, Nr. A-15 - GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- ca. 5 d
- Initial conc.:
- ca. 100 mg/L
- Based on:
- not specified
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- For COD calculation:
Titer: 13.38 ml
Norm.: 0.2336 ml
blank value: 13.02 ml
Consumption: 3.16 ml
Sample weight: 5 ml - Remarks on result:
- not determinable
- Remarks:
- BOD5/COD test
- Parameter:
- BOD5
- Value:
- ca. 34 mg O2/g test mat.
- Parameter:
- COD
- Value:
- ca. 1 181 mg O2/g test mat.
- Parameter:
- BOD5*100/COD
- Value:
- 0.03
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- BOD5 = 34 mg O2/g
COD = 1181 mg O2/g
BOD5/COD = 0.03 - Executive summary:
Method
The BOD5 and the COD of the test substance are determined by measuring the dissolved oxygen concentration before and after 5 days incubation at 20 °C in different test concentrations diluted in water saturated with dissolved oxygen that contains a seed of micro-organisms.
Conclusion
BOD5 = 34 mg O2/g
COD = 1181 mg O2/g
BOD5/COD = 0.03
Referenceopen allclose all
Description of key information
No biodegradation observed
Key value for chemical safety assessment
Additional information
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