1-Octyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide
Description:
1-Octyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, commonly referred to as [OMIM][TFSI] or [OMIM][NTf₂], is a hydrophobic ionic liquid (IL) recognized for its unique set of physicochemical properties. This organic salt exists as a liquid over a wide temperature range, including room temperature, and is characterized by its high thermal stability, low volatility, good ionic conductivity, and wide electrochemical window. The presence of the longer octyl chain on the imidazolium cation, combined with the bis(trifluoromethanesulfonyl)imide anion, imparts significant hydrophobicity and influences its viscosity and solvating capabilities. These features make [OMIM][TFSI] a highly sought-after material for applications in electrochemistry, particularly as electrolytes in advanced battery systems and supercapacitors, as well as a stable medium for organic synthesis, catalysis, and various separation processes.
Properties:
Property Value Product Name 1-Octyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide CAS Number 178631-04-4 Chemical Formula Molecular Weight 475.47 g/mol Appearance Typically a colorless to pale yellow, viscous liquid Synonyms [OMIM][TFSI], [OMIM][NTf₂], 1-Octyl-3-methyl-1H-imidazol-3-ium bis[(trifluoromethyl)sulfonyl]azanide Type Ionic Liquid, Imidazolium Salt Density Approximately 1.35 – 1.37 g/cm³ (varies with temperature and purity) Melting Point Typically below room temperature Solubility Immiscible with water; soluble in many organic solvents Thermal Stability Excellent, often stable up to 350-450 °C Electrochemical Window Wide, suitable for diverse electrochemical applications Viscosity Higher than shorter alkyl chain analogues, but still functional Primary Applications Electrolyte, Lubricant, Solvent, Extraction Agent If you have any needs or questions, please send us an email at pharm@sinocurechem.com. Welcome to send us inquiries.
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