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EC number: 610-949-8 | CAS number: 53045-70-8
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12.12.2006-19.12.2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Version / remarks:
- 1992
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- Version / remarks:
- 1992
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 2-ethylbut-3-en-1-ol
- EC Number:
- 610-949-8
- Cas Number:
- 53045-70-8
- Molecular formula:
- C6H12O
- IUPAC Name:
- 2-ethylbut-3-en-1-ol
- Test material form:
- liquid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge: sewage plant Rossdorf, Germany
The activated sludge used for this study was washed by centrifugation and the supernatant liquid phase was decanted. The solid material was resuspended in tap water and again centrifuged. This procedure was repeated twice. An aliquot of the final sludge suspension was weighed, dried and the ratio of wet sludge to its dry weight was determined. Based on this ratio, calculated aliquots of washed sludge suspension, corresponding to 1.5 g dry material per litre were mixed with test water and then aerated until use overnight. - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- ca. 103 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Composition of medium: reconstituted water:
- Test temperature: 22°C
- pH: 7.6 - 7.9
- Suspended solids concentration: 30 mg/L
- Continuous darkness: yes
TEST SYSTEM
- Culturing apparatus: Manometric Test System, 500 mL
- Number of culture flasks/concentration: 2
CONTROL AND BLANK SYSTEM
- Inoculum blank: 2 flasks
- Abiotic sterile control: 1 flask
- Toxicity control: 1 flask
- Other: procedure control 1 flask
The amounts of test item and reference item were directly weighed into the test flasks. No emulsifiers or solvents were used, but the solutions were dispersed by stirring to achieve a homogeneous solution of the test item. The closed test flasks were incubated in a climatic chamber
under continuous stirring.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 47
- Sampling time:
- 14 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 72
- Sampling time:
- 28 d
- Details on results:
- 10-day window began on day 5 and reached 49% degradation at the end.
The reference substance degraded to 87% after 14 days and to 90° after 28 days.
In the toxicity control, 42% degradation were noted within 14 days and 56% degradation within 28 days.
BOD5 / COD results
- Results with reference substance:
- The reference item sodium benzoate was sufficiently degraded to 87 % after 14 days and to 90 % after 28 days of incubation.The reference item sodium benzoate was sufficiently degraded
to 87 % after 14 days and to 90 % after 28 days of incubation.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable, but failing 10-day window
- Conclusions:
- In a manometric respirometry test according to OECD 301F the test item degraded to 47% after 14 days and to 72% after 28 days. At the end of the 10-day window 49% degradation were observed. Therefore, the substance is classified as readily degradable, but failing the 10-day window.
- Executive summary:
Purpose
The test item was investigated for its ready biodegradability in a Manometric Respirometry Test over a period of 28 days. The biodegradation was followed by the oxygen uptake of the microorganisms during exposure. As a reference item sodium benzoate was tested simultaneously under the same conditions as the test item, and functioned as a procedure control. The GLP study was performed according to OECD TG 301F.
Result
Biodegradation of test item
Under the test conditions the test item degraded to 47% after 14 days and to 72% after 28 days. At the end of the 10-day window 49% degradation were observed. Therefore, the substance is considered as readily degradable, but failing the 10-day window.
Biodegradation of Sodium Benzoate
The reference item sodium benzoate was sufficiently degraded to 87 % after 14 days and to 90 % after 28 days of incubation, thus confirming the suitability of the used activated sludge inoculum.
Biodegradation in the Toxicity Control
In the toxicity control containing both, the test item and the reference item 42 % biodegradation was noted within 14 days and 56 % biodegradation was determined after 28 days of incubation. According to the test guidelines the test item can be assumed to be not inhibitory on the activated sludge micro organisms because degradation was >25 % within 14 days.
Conclusion
The test is considered as readily degradable, but failing the 10-day window.
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