Description

3-Methyl-1-Octadecylimidazolium Bis(Trifluoromethylsulfonyl)Imide is a high-purity ionic liquid belonging to the imidazolium cation family, valued for its exceptional thermal stability and low volatility. This compound serves as a versatile, non-aqueous electrolyte and solvent for advanced electrochemical and separation processes. It is primarily utilized by R&D and manufacturing sectors in energy storage, catalysis, and specialty chemical synthesis where precise control over the chemical environment is critical.

Application

• Electrolyte Component for high-temperature lithium-ion batteries, supercapacitors, and dye-sensitized solar cells (DSSCs).
• Green Solvent & Reaction Medium for organic synthesis, polymerization, and catalysis, offering advantages over traditional volatile organic compounds (VOCs).
• Gas Separation & Capture medium, particularly for CO2 absorption and separation technologies.
• Lubricant & Additive in high-performance formulations requiring thermal stability and low vapor pressure.
• Analytical Chemistry as a stationary phase modifier in chromatography and a matrix for mass spectrometry.
• Phase-Transfer Catalyst facilitating reactions between reagents in immiscible phases.

Basic Information

Product Name	3-Methyl-1-Octadecylimidazolium Bis(Trifluoromethylsulfonyl)Imide
CAS No.	404001-51-0
Molecular Formula	C25H45F6N3O4S2
Molecular Weight	653.84 g/mol
Synonyms	1-Octadecyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide; [C18MIM][NTf2]; 1-Methyl-3-octadecylimidazolium bis(trifluoromethanesulfonyl)amide; OMIM TFSI; 1-Octadecyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide; 1-Methyl-3-octadecylimidazolium bis(trifluoromethylsulfonyl)imide; C18MIm NTf2
EINECS	Contact for details

Quality Control

Our production of 3-Methyl-1-Octadecylimidazolium Bis(Trifluoromethylsulfonyl)Imide adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized by NMR, HPLC, and Karl Fischer titration to confirm identity, assay, and moisture content. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed under an inert atmosphere such as nitrogen or argon to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Halide Content (Cl⁻, Br⁻)	≤ 100 ppm
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.