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EC number: 265-314-4 | CAS number: 65036-46-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Justification for type of information:
- Read-across from the alternative salt form of the registered substance is justified. Please see the justification document in section 13.
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 835.3110 (Ready Biodegradability)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: International Standard ISO 9439: Water Quality - Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds - Method by analysis of released carbon dioxide.
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 20 mg/L
- Based on:
- TOC
- Remarks:
- corresponds to approximately 43 mg/L test substance
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Key result
- Parameter:
- % degradation (CO2 evolution)
- Value:
- >= 20 - <= 30
- Sampling time:
- 28 d
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The substance is not biodegradable based on a screening test on the read-across substance.
Reference
Description of key information
>20 - <30 % biodegradation was observed during 28 days in an OECD 301 study with the read-across substance.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
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