Description

1-Ethyl-3-Methylimidazolium Bis(Trifluoromethylsulfonyl)Imide (CAS NO 174899-82-2) is a high-performance ionic liquid belonging to the EMIM family, prized for its exceptional thermal stability, wide electrochemical window, and low viscosity. Its core value proposition lies in enabling advanced, efficient, and sustainable processes across high-tech industries by serving as a superior, non-volatile solvent and electrolyte medium. This product is essential for researchers and manufacturers in energy storage, advanced materials synthesis, and specialty chemical processing who require reliable, high-purity ionic liquids for cutting-edge applications.

Application

• Electrolyte for Advanced Batteries: Used as a key component in electrolytes for lithium-ion, lithium-sulfur, and next-generation metal-air batteries due to its high ionic conductivity and stability.
• Solvent for Catalysis & Synthesis: Serves as a green, non-volatile reaction medium for organic synthesis, polymerization, and biphasic catalysis, facilitating easier product separation.
• Gas Separation & Capture: Employed in supported ionic liquid membranes (SILMs) for the selective separation of CO2 and other gases from industrial streams.
• Lubricant & Additive: Functions as a high-performance lubricant or anti-wear additive for demanding mechanical and aerospace applications.
• Electrochemistry & Sensors: Utilized as an electrolyte in electrochemical sensors, supercapacitors, and electrodeposition processes.
• Analytical Chemistry: Acts as a stationary phase in gas chromatography (GC) or as a matrix in MALDI-MS for specialized separations and analyses.

Basic Information

Product Name	1-Ethyl-3-Methylimidazolium Bis(Trifluoromethylsulfonyl)Imide
CAS No.	174899-82-2
Molecular Formula	C8H11F6N3O4S2
Molecular Weight	391.31 g/mol
Synonyms	EMIM TFSI; EMIM NTf2; 1-Ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide; 1-Ethyl-3-methylimidazolium triflimide; EMIM Bis(trifluoromethylsulfonyl)amide; EMIM TFSA; [EMIM][TFSI]; 1-Ethyl-3-methyl-1H-imidazol-3-ium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide
EINECS	Contact for details

Quality Control

Our 1-Ethyl-3-Methylimidazolium Bis(Trifluoromethylsulfonyl)Imide is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, Karl Fischer titration, and ICP-MS, to ensure high purity and low levels of critical impurities such as halides and metals. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store under a dry inert atmosphere (e.g., nitrogen or argon) in a cool, dry place. Recommended long-term storage temperature is 2-8°C. Allow the container to reach room temperature before opening to minimize moisture ingress.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Water Content (KF)	≤ 100 ppm
Halide Content (Cl⁻, Br⁻)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 5 ppm

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