Registration Dossier
Registration Dossier
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EC number: 217-285-4 | CAS number: 1798-60-3
Biodegradation in water: screening tests
Administrative data
- 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:
- other: Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- GLP compliance:
- no
Test material
- Reference substance name:
- (R)-1-hydroxy-1-phenylacetone
- EC Number:
- 217-285-4
- EC Name:
- (R)-1-hydroxy-1-phenylacetone
- Cas Number:
- 1798-60-3
- Molecular formula:
- C9H10O2
- IUPAC Name:
- (1R)-1-hydroxy-1-phenylpropan-2-one
- Details on test material:
- - Name of test material (as cited in study report): (-)-Phenylacetylcarbinol, roh
- Analytical purity: 65.5 %
- Impurities (identity and concentrations): Benzylalcohol 27.95 %; Phenylmethylglycol 5.95 %
- Lot/batch No.: P. 222/26
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Activated sludge from laboratory wastewater treatment plants fed with municipal sewage.
- Concentration of sludge: 30 mg/l - Duration of test (contact time):
- 15 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
- Initial conc.:
- 30 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- TEST CONDITIONS
- Test temperature: 22 ± 2 °C
- pH: 7.4 - 7.7
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (DOC removal)
- Value:
- < 10
- Sampling time:
- 1 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 20 - 30
- Sampling time:
- 2 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 60 - 70
- Sampling time:
- 4 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 90 - 100
- Sampling time:
- 15 d
- Details on results:
- Kinetic of test substance (in %):
= 29 after 1 day(s)
= 43 after 3 day(s)
= 97 after 5 day(s)
Kinetic of control substance (in %):
= 1 after 1 day(s)
= 95 after 5 day(s)
Applicant's summary and conclusion
- Interpretation of results:
- readily biodegradable
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