1-Butyl-3-ethylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 174899-89-9

Key Applications

Electrochemical Systems

• Serves as a high‑conductivity ionic liquid electrolyte for lithium, sodium, and multivalent metal batteries.
• Used in supercapacitors and hybrid capacitors where low viscosity and wide electrochemical stability windows are required.
• Supports electrodeposition of reactive or air‑sensitive metals under moisture‑free, non‑volatile conditions.
• Enables stable operation in high‑temperature electrochemical devices due to the thermal robustness of the BETI anion.

Catalysis and Synthesis

• Functions as a non‑volatile reaction medium for transition‑metal catalysis, including cross‑coupling, hydrogenation, and carbon–carbon bond‑forming reactions.
• Provides enhanced solubility for organometallic complexes, improving turnover and catalyst lifetime.
• Used in biphasic catalysis where phase separation simplifies product isolation.
• Supports acid‑sensitive transformations due to the weakly coordinating nature of the bis(trifluoromethylsulfonyl)imide anion.

Separation Science and Extraction

• Applied in liquid–liquid extraction of metal ions, particularly rare‑earth and actinide species, where hydrophobicity and tunable coordination behavior improve selectivity.
• Used in extractive desulfurization and denitrification of fuels.
• Serves as a stationary‑phase component or additive in chromatography to modulate retention and selectivity.

Materials Processing

• Acts as a plasticizer and ion‑conducting additive in polymer electrolytes and ionogels.
• Supports fabrication of thin films, coatings, and membranes requiring low volatility and controlled ionic mobility.
• Used in nanoparticle synthesis as a stabilizing, non‑volatile medium that enables narrow size distributions.

Thermal and Chemical Stability Applications

• Suitable for high‑temperature reaction environments due to the thermal stability of the BETI anion.
• Employed in systems requiring low vapor pressure and chemical inertness, including vacuum‑compatible processes.

Spectroscopy and Analytical Chemistry

• Provides a low‑volatility matrix for mass spectrometry and spectroscopic studies of ionic species.
• Used as a solvent for electroanalytical measurements where wide potential windows are essential.

Please contact us if you want to learn more or need assistance with your order.