Registration Dossier
Registration Dossier
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EC number: 262-475-2 | CAS number: 60857-05-8
Biodegradation in water: screening tests
Administrative data
- 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:
- other: GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 835.3120 (Sealed Vessel Carbon Dioxide Production Test)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Tetrahydro-4-methylene-2-(2-methyl-1-propenyl)-2H-pyran
- EC Number:
- 262-475-2
- EC Name:
- Tetrahydro-4-methylene-2-(2-methyl-1-propenyl)-2H-pyran
- Cas Number:
- 60857-05-8
- Molecular formula:
- C10H16O
- IUPAC Name:
- 4-methylidene-2-(2-methylprop-1-en-1-yl)oxane
- Details on test material:
- - Chemical name of test material (tetrahydro-4-methylene-2-(2-methyl-1-propenyl)-2H-pyran
- Lot/batch No.: LJ 1-28/29
- Analytical purity: 99.2 area-%
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge taken from municipal a waste water treatment plant (Mannheim, Germany)
- Concentration of sludge: 4 mg/l - Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- other: TOC
- Initial conc.:
- 25 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- TOC removal
- Details on study design:
- TEST CONDITIONS
- Test temperature: 22 ± 2 °C
- pH-value: 7.4 +/- 0.2
TEST SYSTEM
- Test vessels: 160 mL incubation bottles filled up to a volume of 100 mL
- Bottles were closed with butyl rubber septa gas tight and shaken by an orbital shaker with a speed of about 150 r/min
- Sampling: at sampling day three bottles of each test assays were sacrificed
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Parameter:
- % degradation (TOC removal)
- Value:
- 10 - 20
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Interpretation of results:
- other: not readily biodegradable
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