Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Duration of test (contact time):
- <= 28 d
- Initial conc.:
- ca. 100 mg/L
- Based on:
- ThOD
- Remarks:
- Test item
- Initial conc.:
- ca. 30 mg/L
- Based on:
- ThOD
- Remarks:
- SS
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- The theoretical oxygen demand was calculated based on the structural formula and the molecular weight as provide by sponsor.
- Reference substance:
- other: sodium benzoate
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 17.5
- Sampling time:
- 28 d
- Results with reference substance:
- The percentage microbial degradation of the reference item, sodium benzoate, observed by BOD meter was 71.2% after 7 days and 82.8% after 14 days.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
Reference
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
- Type of water:
- freshwater
Additional information
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