Registration Dossier
Registration Dossier
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EC number: 946-584-9 | 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:
- supporting study
- Study period:
- 1980
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Study conducted according to OECD Guideline 301 C but with deviations: no detail on material and methods
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Deviations:
- yes
- Remarks:
- no detail on material and methods
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- No data
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- - Concentration of sludge: 30 ppm
- Duration of test (contact time):
- 14 d
- Initial conc.:
- 100 other: ppm
- Based on:
- test mat.
- Details on study design:
- No data
- Preliminary study:
- No data
- Test performance:
- No data
- Parameter:
- % degradation (O2 consumption)
- Value:
- >= 41 - <= 98
- Sampling time:
- 14 d
- Details on results:
- - Indirect analysis (BOD): 41, 81 and 98%
- Direct analysis (GC): 100%
- Direct analysis (TOC): 50, 73 and 81% - Results with reference substance:
- No data
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Under the test conditions, the test item was readily biodegradable.
- Executive summary:
In a ready biodegradation study performed according to OECD Guideline 301 C, the test item was tested at concentrations of 100 ppm and the inoculum was activated sludge (30 ppm). The degradation of the test material was assessed by the determination of the oxygen consumption.
At 100 ppm test concentration, 41-98% degradation by biochemical oxygen demand was reached in 14 days.
Under the test conditions, the test item was readily biodegradable.
Reference
None
Description of key information
Under the test conditions, the compound was found to be readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
In a ready biodegradation study performed according to OECD Guideline 301 C, the test item was tested at concentrations of 100 ppm and the inoculum was activated sludge (30 ppm). The degradation of the test material was assessed by the determination of the oxygen consumption.
At 100 ppm test concentration, 41-98% degradation by biochemical oxygen demand was reached in 14 days.
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