Registration Dossier
Registration Dossier
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EC number: 245-711-9 | CAS number: 23519-77-9
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
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- according to guideline
- Guideline:
- other: other
- Principles of method if other than guideline:
- BOD (Standard Methods for the Examination of Water and Wastewater. 1971. 13th Ed. American Public Health Association, New York, NY)
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic, non-adapted
- Duration of test (contact time):
- ca. 20 d
- Initial conc.:
- ca. 3 mg/L
- Based on:
- test mat.
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 64
- Sampling time:
- 5 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 76
- Sampling time:
- 10 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 81
- Sampling time:
- 15 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 75
- Sampling time:
- 20 d
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Rapidly biodegradable according to GHS.
Reference
Description of key information
Readily biodegradable of 1 -propanol based on BOD method
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
As the target substance hydrolyzes rapidly, the intrinsic properties lies in the hydrolysis products. The 1 -propanol degraded more than 60% after 5 days in a BOD method (Price, et al. 1974).
The inorganic product, Zirconium dioxide, was not considered further in this report as biodegradation and partition coefficient assessments did not apply.
Based on these findings, the target substance was considered readily biodegradable.
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