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Description
TCI E0753 1-Ethyl-2,3-dimethylimidazolium Bis(trifluoromethanesulfonyl)imide is an ionic liquid built from a fully substituted imidazolium cation paired with the bis(trifluoromethanesulfonyl)imide anion, commonly abbreviated as TFSI. Unlike conventional organic solvents, this material consists entirely of ions yet remains liquid across the normal working temperature range of a laboratory. Its role on the bench is that of a non-volatile reaction medium, electrolyte, and extraction phase, which makes it well suited to experiments that demand high thermal stability and minimal solvent loss over long run times.
The characteristic that makes this compound stand out is the C2 position on the imidazolium ring, which has already been substituted with a methyl group. This substitution removes the most reactive acidic proton, so the cation becomes considerably more resistant to strong bases and more stable electrochemically. The TFSI anion itself is known for being highly delocalised, weakly coordinating, and hydrophobic, which translates into relatively low viscosity, a wide electrochemical potential window, and the ability to form two-phase systems with water. Together these features make it a mature choice for advanced electrochemical studies.
In Indonesian laboratories, materials of this type are typically handled in university research groups, government research institutes, and industrial R&D units working on electrochemistry, green solvents, and separation science. Because the liquid does not evaporate readily, it suits work in warm and humid conditions where volatile solvent losses are difficult to control. It is usually ordered in small research quantities for method development, then scaled up only once a procedure has been established.
Laboratory Applications
- Electrochemical window studies — the methylated C2 position and the delocalised TFSI anion together give a wide, clean potential range, so background currents do not obscure the analyte response.
- Non-aqueous electrolyte formulation — as a non-volatile ionic conductor it holds its composition through extended cycling experiments, avoiding the drift that comes with evaporating molecular solvents.
- Reaction medium for thermally demanding synthesis — the material stays liquid and stable while resisting solvent loss, letting reactions proceed at elevated temperature without continuous solvent replenishment.
- Biphasic liquid–liquid extraction — the hydrophobic nature of the TFSI anion allows a distinct two-phase system with water, giving a workable partition medium for separation and recovery studies.
- Base-tolerant ionic liquid chemistry — with the acidic C2 proton blocked by methyl substitution, the cation withstands strong bases far better than ordinary imidazolium salts, widening the range of usable reagents.
Specifications
- Brand: TCI (Tokyo Chemical Industry)
- CAS number: 174899-90-2
- Category: Chemistry > Specialty Synthesis > Ionic Liquids [Specialty Synthesis]
- Physical form: ionic liquid, liquid at normal laboratory working temperatures
- Pack sizes: available in TCI research-scale packaging; please confirm the currently offered size when ordering
- Storage: keep in a tightly closed container, protected from moisture
Handling and Storage
Store the material in a tightly sealed original container in a cool, dry, well-ventilated area, away from heat sources and from strong bases or other incompatible reagents. Because the TFSI anion is hydrophobic yet the liquid can still pick up atmospheric moisture, minimise the time the container stays open and consider dispensing under a dry atmosphere for moisture-sensitive electrochemical work. Use compatible glass or suitable inert plastic vessels for transfer, and handle in a fume hood while wearing safety glasses, a lab coat, and chemically resistant gloves. Consult the manufacturer's safety data sheet before first use and follow local waste disposal rules.
