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EC number: 251-528-5 | CAS number: 33454-82-9
- 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
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 18-July-2016 to 25-August-2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- Adopted 27 July 1995
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
Test material
- Reference substance name:
- Lithium trifluoromethanesulphonate
- EC Number:
- 251-528-5
- EC Name:
- Lithium trifluoromethanesulphonate
- Cas Number:
- 33454-82-9
- Molecular formula:
- CHF3O3S.Li
- IUPAC Name:
- lithium trifluoromethanesulphonate
- Test material form:
- solid: particulate/powder
- Details on test material:
- See confidential details on test material
Constituent 1
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature (< 30°C)
Results and discussion
Water solubilityopen allclose all
- Key result
- Water solubility:
- ca. 1 246 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- 3.37
- Remarks on result:
- other: Average solubility of 3 replicates. Measurement by ICP (1246 g/L by thermogravimetry)
- Water solubility:
- ca. 1 249 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- 2.65
- Remarks on result:
- other: Average solubility of 3 replicates, Test in buffer solution of initial pH of 4, Measurement by thermogravimetry.
- Water solubility:
- ca. 1 232 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- 3.54
- Remarks on result:
- other: Average solubility of 3 replicates, Test in buffer solution of initial pH of 7, Measurement by thermogravimetry.
- Water solubility:
- ca. 1 256 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- 4.23
- Remarks on result:
- other: Average solubility of 3 replicates, Test in buffer solution of initial pH of 9, Measurement by thermogravimetry.
- Details on results:
- See section "Any other information on results incl. tables"
Any other information on results incl. tables
Preliminary test:
The approximate solubility is given in the table under that volume of water in which complete dissolution of the sample occurs.
0.1g soluble in "x" mL of water | 0.1 | 0.5 | 1 | 2 | 10 | 100 | >100 |
Approximative solubility (grams per liter) | >1000 | 1000 to 200 | 200 to 100 | 100 to 50 | 50 to 10 | 10 to 1 | <1 |
The approximate solubility established of Lithium Trifluoromethanesulfonate in water by this attempt is higher than 1000 g/L, according to the OECD guidelines.
Main test:
Water solubility
Results of the water solubility test on Lithium Trifluoromethanesulfonate at 20°C are given in the following table:
Thermogravimetric analysis | ICP-AES analysis | |||||
Sample | Solubility in water (w%) |
Average solubility (w%) | Standard deviation (w%) | Average solubility (w%) | Standard deviation (w%) | pH |
One day | 76.5 | 76.6 | 0.09 | 83.3 | 1.0 | 3.37 |
76.6 | ||||||
76.6 | ||||||
Two days | 76.6 | 76.7 | 0.06 | 76.0 | 1.0 | 3.36 |
76.7 | ||||||
76.7 | ||||||
Three days | 76.7 | 76.7 | 0.04 | 70.0 | 1.0 | 3.36 |
76.6 | ||||||
76.7 |
Standard deviation obtained by ICP-AES are larger due to the large value of measured solubility (more precise when measuring concentration <= 1w%). Measuring such high concentrations involved serial dilutions which increased the uncertainty of the results. Thus, thermogravimetric analysis is more adapted to measure the solubility of Lithium Trifluoromethanesulfonate.
The concentrations measured by the thermogravimetric technique do not differ by more than 15% (0.1%) therefore, the test is considered as valid. The water solubility is calculated with the nine values obtained as the equilibrium saturation is reached after one day. The standard deviation is calculated with the same values.
The water solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.6 ± 0.1 w%.
Solubility in buffer solutions
The average solubilities, summarized in the following table, are calculated with the nine values obtained as the equilibrium saturation is reached after one day. The standard deviation is calculated with the same values.
pH (20°C) | Average solubility (w%) | Standard deviation (w%) |
4 | 76.8 | 0.1 |
7 | 76.4 | 0.1 |
9 | 76.9 | 0.1 |
The pH of buffer solution has no effect on the solubility of lithium trifluoromethanesulfonate.
Applicant's summary and conclusion
- Conclusions:
- The water solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.6 +/- 0.1 w%., corresponding to 1246 g/L.
In a buffer solution of pH 4, the solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.8 +/- 0.1 w%, corresponding to 1249 g/L.
In a buffer solution of pH 7, the solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.4 +/- 0.1 w%, corresponding to 1232 g/L.
In a buffer solution of pH 9, the solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.9 +/- 0.1 w%, corresponding to 1256 g/L.
The pH of buffer solution has no effect on the solubility of lithium trifluoromethanesulfonate. - Executive summary:
The determination of the solubility of lithium trifluoromethanesulfonate in water and in different buffer solutions was performed according to standardised guidelines (OECD TG 105 and UE Method A.6) using the flask method followed by two analytical methods: ICP-AES and thermogravimetry.
After a preliminary test which demonstrated that the water solubility is higher than 1000 g/L at 20°C, 3 replicates were performed in parallel and measurements were done after 1, 2 and 3 days of incubation by thermogravimetric technique and ICP-AES analysis. The two methods of measurement did not differ by more than 15% (0.1%) therefore, both methods were considered as valid. The standard of deviation between the replicates was below 0.1 % and 1% for the thermogravimetric technique and the ICP-AES analysis respectively. The water solubility was calculated with the nine values obtained as the equilibrium saturation was reached after one day. The results were the following :
The water solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.6 ± 0.1 w%, which corresponds to 1246 g/L, and the pH of the saturated solution is 3.36.
As the test item dissociates in water, the impact of the pH on the water solubility has been determined following the same procedure in buffered solutions at pH 4, 7 and 9. Measurements were performed with the thermogravimetric technique only. As the equilibrium saturation was reached after one day, the water solubility was calculated with the nine values. The standard of deviation between the replicates was 0.1 %
The following results demonstrated that the pH of buffer solution has no effect on the solubility of lithium trifluoromethanesulfonate :In a buffer solution of pH 4, the solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.8 +/- 0.1 w%, which corresponds to 1249 g/L, and the pH of the saturated solution is 2.65.
In a buffer solution of pH 7, the solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.4 +/- 0.1 w%, which corresponds to 1232 g/L, and the pH of the saturated solution is 3.54.
In a buffer solution of pH 9, the solubility of Lithium Trifluoromethanesulfonate at 20°C is 76.9 +/- 0.1 w%, which corresponds to 1256 g/L, and the pH of the saturated solution is 4.23.
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