Registration Dossier
Registration Dossier
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EC number: 209-963-3 | CAS number: 599-04-2
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: Non-GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1990
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- ISO 7827 (Evaluation in an Aqueous Medium of the "Ultimate" Aerobic Biodegradability of Organic Compounds - Method by Analysis of Dissolved Organic Carbon (DOC))
- GLP compliance:
- no
Test material
- Reference substance name:
- α-hydroxy-β,β-dimethyl-γ-butyrolactone
- EC Number:
- 209-963-3
- EC Name:
- α-hydroxy-β,β-dimethyl-γ-butyrolactone
- Cas Number:
- 599-04-2
- Molecular formula:
- C6H10O3
- IUPAC Name:
- (3R)-dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone
- Details on test material:
- - Name of test material (as cited in study report): 4,4-Dimethyl-3-hydroxy-2H-furanon
Purity: no data
Water solubility: good
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 21 d
Initial test substance concentration
- Initial conc.:
- 20.1 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 92
- Sampling time:
- 21 d
- Details on results:
- Kinetic of test substance (in %):
= 16 after 1 day(s)
= 27 after 7 day(s)
= 84 after 14 day(s)
= 82 after 15 day(s)
= 92 after 21 day(s)
Kinetic of control substance (in %):
= 83 after 7 day(s)
Applicant's summary and conclusion
- Interpretation of results:
- readily biodegradable
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