Description

1-Ethyl-3-Methylimidazolium Bis(Pentafluoroethylsulfonyl)Imide, 99% [Emibeti] is a high-purity ionic liquid belonging to the EMIM family, recognized for its excellent thermal stability and wide electrochemical window. This compound is a critical advanced material for applications demanding superior ionic conductivity and non-volatility under extreme conditions. It is primarily sought by researchers and manufacturers in the energy storage, advanced catalysis, and specialty chemical synthesis sectors.

Application

• Electrolyte Component for Advanced Batteries: Used as a key ionic conductor in lithium-ion and next-generation (e.g., Li-S, Li-air) batteries due to its high thermal stability and non-flammability.
• Solvent for Catalysis and Synthesis: Serves as a versatile, non-volatile reaction medium for organic synthesis, polymerization, and biphasic catalysis.
• Electrolyte for Supercapacitors and Dye-Sensitized Solar Cells (DSSCs): Employed to enhance performance and longevity in electrochemical double-layer capacitors and photoelectrochemical cells.
• Gas Separation and Capture Media: Utilized in supported ionic liquid membranes (SILMs) for the selective separation of gases like CO2.
• Lubricant and Additive: Functions as a high-performance lubricant or anti-wear additive for demanding mechanical and aerospace applications.
• Analytical Chemistry: Applied as a stationary phase in gas chromatography (GC) and as a matrix in MALDI-MS for specialized separations and analyses.

Basic Information

Item	Details
Product Name	1-Ethyl-3-Methylimidazolium Bis(Pentafluoroethylsulfonyl)Imide, 99% [Emibeti]
CAS No.	216299-76-2
Molecular Formula	C10H11F10N3O4S2
Molecular Weight	491.33 g/mol
Synonyms	EMIM BETI; [EMIM][BETI]; 1-Ethyl-3-methylimidazolium bis(pentafluoroethanesulfonyl)imide; 1-Ethyl-3-methylimidazolium bis(perfluoroethylsulfonyl)imide; EMIM Bis(trifluoromethylsulfonyl)imide (common misnomer); EMIM NTf2 (common misnomer); EMIM TFSI (common misnomer); EMIM FSI (common misnomer)
EINECS	Contact for details

Quality Control

Our 1-Ethyl-3-Methylimidazolium Bis(Pentafluoroethylsulfonyl)Imide is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including NMR, HPLC, and Karl Fischer titration, to ensure it meets the specified 99% purity and low levels of halide and water content. A comprehensive Certificate of Analysis (COA) documenting all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Water Content (KF)	≤ 200 ppm
Halide Content (Cl⁻, Br⁻)	≤ 50 ppm
Density (at 20°C)	~1.52 g/cm³

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