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EC number: 700-235-5 | CAS number: 174899-82-2
- 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:
- Study Plan dated: 10.Jan 2018 Experimental Starting Date: 31.Jan. 2018 Experimental Completion Date: 01.Mar. 2018
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 310 (Ready Biodegradability - CO2 in Sealed Vessels (Headspace Test)
- Version / remarks:
- 23. Mar. 2006, corrected 26. Sep. 2014
- Deviations:
- yes
- Remarks:
- • Temperature range was 19.8 – 21.8 °C instead of 20.0 ± 1.0 °C. As degradation of the positive control was in the normal range this is considered as uncritical concerning the outcome of the study.
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.29 (Ready Biodegradability - CO2 in Sealed Vessels (Headspace Test))
- Version / remarks:
- 24. Jan. 2014
- Deviations:
- yes
- Remarks:
- • Temperature range was 19.8 – 21.8 °C instead of 20.0 ± 1.0 °C. As degradation of the positive control was in the normal range this is considered as uncritical concerning the outcome of the study.
- Qualifier:
- according to guideline
- Guideline:
- ISO 14593:1999 (Water quality - Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium - Method by analysis of inorganic carbon in sealed vessels (CO2 headspace test))
- Version / remarks:
- 2005
- Deviations:
- yes
- Remarks:
- • Temperature range was 19.8 – 21.8 °C instead of 20.0 ± 1.0 °C. As degradation of the positive control was in the normal range this is considered as uncritical concerning the outcome of the study
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 1-ethyl-3-methyl-1H-imidazol-3-ium; trifluoro[(trifluoromethanesulfonylazanidyl)sulfonyl]methane
- EC Number:
- 700-235-5
- Cas Number:
- 174899-82-2
- Molecular formula:
- C8H11F6N3O4S2
- IUPAC Name:
- 1-ethyl-3-methyl-1H-imidazol-3-ium; trifluoro[(trifluoromethanesulfonylazanidyl)sulfonyl]methane
- Test material form:
- liquid
- Details on test material:
- clear liquid, colorless
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: proionic GmbH; 25PI208_12
- Expiration date of the lot/batch: May 2019
- Purity test date: 99.84 wt% (HPLC); 99.95 wt% (IC)
STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- The sludge was taken from the activation basin of the ESN (Stadtentsorgung Neustadt) sewage treatment plant, Im Altenschemel, NW-Lachen-Speyerdorf.
Date of collection: 01. Feb. 2018 - Duration of test (contact time):
- 28 d
- Details on study design:
- This study was performed in order to evaluate the aerobe degradation potential of 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide by aerobe micro-organisms at a given concentration.
The test item as the sole source of carbon and energy, was incubated in a buffer-mineral salts medium which was inoculated with a mixed population of micro-organisms. The test was performed in sealed bottles with a headspace of air, which provides a reservoir of oxygen for aerobic biodegradation. The CO2 evolution resulting from the ultimate aerobic biodegradation of the test item was determined by measuring the IC produced in the test bottles in excess of that produced in blank control vessels containing inoculated medium only. The extent of biodegradation was expressed as a percentage of the theoretical max-imum IC production (ThIC), based on the quantity of test item (as organic carbon) added initially.
Reference substance
- Reference substance:
- aniline
Results and discussion
- Test performance:
- The test was performed at room temperature (19.8 - 21.8 C) without direct lighting.
Duration of the test was 28 days. During this time, the created CO2 in the vessels was de-termined on days 0, 4, 7, 11, 14, 19, 22, 28.
% Degradation
- Key result
- Parameter:
- % degradation (inorg. C analysis)
- Value:
- 0.72
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- %degradation (inorg. C analysis): 87.14
Any other information on results incl. tables
Parameter |
Value |
10-day-window |
not detectable |
Degradation at the end of 10-day-window |
none |
Degradation at the end of the test |
1% |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The validity criteria were met.
If degradation in the toxicity flask is below 25% at the end of the test, the test item can be considered as toxic towards the inoculum. As degradation in the toxicity flask was 41 % at the end of the test, the test item can be stated as “not toxic towards the inoculum in a con-centration of 86.7 mg/l”.
In the OECD guideline ready degradability is defined as degradation surpassing 60% within 10 days after reaching a level of 10 %. Therefore, the test item can be considered as “not readily biodegradable”. As degradation missed 60 % within 28 days, the test item is considered as “not ultimately biodegradable within 28 days”, either.
Because the test item is not readily biodegradable, in 1 test flask without addition of NaOH the pH was measured. If the pH is below 6.5 nitrification is possible. The measured pH was 7.4. Therefore, no nitrification has occurred.
The result of the test can be considered valid. - Executive summary:
The test item was tested using a concentration of 86.7 mg1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide/L in test medium.
Aniline was chosen as positive control.
Activated sludge from a sewage treating plant was used as inoculum (concentration 4.0 mg suspended solids/L). The test was left running for 28 days.
All validity criteria were met. Degradation of the positive control was 72 % after 7 days.
The following data were determined for the test item1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide:
10-day-window: not detectable
degradation at the end of 10-day-window none
degradation at the end of the test 1 %
Therefore,1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imideisnot readily biodegradablefollowing OECD 310.As degradation missed 60 % within 28 days, the test item is considered as “not ultimately biodegradable within 28 days”, either.
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