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Diss Factsheets
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EC number: 415-450-7 | CAS number: 126213-50-1
- 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
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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:
- 4.2.-5.3.2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: This study was carried out in accordance with internationally valid GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-E (Determination of the "Ready" Biodegradability - Closed Bottle Test)
- Deviations:
- no
- GLP compliance:
- yes
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Details on test material:
- - Name of test material (as cited in study report): 3,4-Ethylenedioxythiophene
- Comercial name. EDOT
- Substance type: pure organic substance
- Physical state: liquid near colourless to pale yellow
- Analytical purity: > 99%
- Lot/batch No.: 091201
- Expiration date of the lot/batch: 21.1.2011
- Storage condition of test material: Keep in dark at room temperature. Stored in amber glass bottles under the argon atmosphere. Minimalize time for handling with substance without protective argon atmosphere as possible. Maximal time without protective atmosphere is 30 min.
Study design
- Oxygen conditions:
- anaerobic
- Inoculum or test system:
- sewage, predominantly domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge: a mixed population of microorganisms obtained from the secondary effluent of the wastewater treatment plant of Pardubice processing predominantly municipal sewage.
- Preparation of inoculum for exposure: The fresh collected wastewater was filtered through paper filter. COD was determined and wastewater was aerated till using. - Duration of test (contact time):
- 0 - 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 2.1 mg/L
- Based on:
- test mat.
- Initial conc.:
- 3.4 mg/L
- Based on:
- COD
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Composition of medium: preparation of mineral medium in accordance to Method C.4E - Closed Bottle Test, Council Regulation (EC) No. 440/2008, published in O. J. L 142, 2008.
- Test temperature: 20 +/- 1°C
- pH: 7.4
- pH adjusted: no
- Illumination: no illumination, in the darkness
TEST SYSTEM
- Series of bottles for the test:
- 2 x 9 bottles with test substance and inoculated medium
- 2 x 9 bottles with reference substance and inoculated medium for the check of inoculum activity
- 2 x 5 bottles with test and reference substance mixture and inoculated medium for the toxicity test
- 2 x 9 bottles with inoculated medium only for the blank determination
- Method used to create anaerobic conditions: completely full closed bottles
- Measuring equipment: equipment for the determination of dissolved oxygen
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes, the inoculated mineral medium
- Toxicity control: yes, the test and reference substance mixture
MEASUREMENT:
- analysis for dissolved oxygen by the Winkler method at the zero-time, 3rd, 7th, 10th, 14th, 17th, 21st, 24th and 28th day.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
- Test performance:
- The results of biological degradation are related to experimentally determined COD values of test and reference substance at the beginning of the test.
The test substance had sufficient solubility in used mineral medium. The dosage from the stock solution was carried out.
In parallel to the main test the toxicity test was performed. The test substance was not inhibiting for the used inoculum.
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 7.6
- Sampling time:
- 28 d
BOD5 / COD results
BOD5 / CODopen allclose all
- Parameter:
- BOD5
- Value:
- 0.02 other: mg/mg
- Parameter:
- COD
- Value:
- 1.62 other: mg/mg
- Results with reference substance:
- COD of reference substance: 1.642 mg/mg, biodegradation 71.6% after 28 days.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- In this 28-day study of ready biodegradability the degradation of 7.6 % of the test substance, 3,4-Ethylenedioxythiophene, was attained in the end of study.
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Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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