Description

1-Ethyl-3-Methylimidazolium Bis(Fluorosulfonyl)Imide is a high-performance ionic liquid belonging to the EMIM family. This compound is valued for its exceptional electrochemical stability, high ionic conductivity, and low viscosity, making it a superior electrolyte component. It is primarily sought by researchers and manufacturers in the energy storage, advanced materials, and specialty chemical synthesis sectors for developing next-generation technologies.

Application

• Electrolyte for Lithium-ion and Next-Generation Batteries: Used as a key component in high-voltage, high-safety electrolytes for lithium-ion and lithium-metal batteries.
• Supercapacitor Electrolyte: Employed in electric double-layer capacitors (EDLCs) and other supercapacitors due to its wide electrochemical window and stability.
• Electroplating and Metal Deposition: Serves as a solvent and electrolyte in the electrodeposition of reactive metals like aluminum, magnesium, and their alloys.
• Chemical Synthesis and Catalysis: Acts as a green solvent or catalyst support for various organic reactions, including Diels-Alder and Friedel-Crafts reactions.
• Gas Separation and Capture: 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 applications.
• Academic and Industrial R&D: A critical research chemical for developing new materials and processes in electrochemistry and green chemistry.

Basic Information

Item	Detail
Product Name	1-Ethyl-3-Methylimidazolium Bis(Fluorosulfonyl)Imide
CAS No.	235789-75-0
Molecular Formula	C8H11F2N3O4S2
Molecular Weight	315.32 g/mol
Synonyms	EMIM FSI; EMIM-FSI; 1-Ethyl-3-methylimidazolium bis(fluorosulfonyl)imide; 1-Ethyl-3-methylimidazolium bis(fluorosulfonyl)amide; EMIM Bis(Fluorosulfonyl)Imide; EMIM N(SO2F)2; 1-Ethyl-3-methyl-1H-imidazol-3-ium 1,1,2,2,2-pentafluoro-N-(pentafluoro-λ⁶-sulfanyl)ethanesulfonimidate; Ionic Liquid [EMIM][FSI]
EINECS	Contact for details

Quality Control

Our production of 1-Ethyl-3-Methylimidazolium Bis(Fluorosulfonyl)Imide adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for sensitive electrochemical applications. Each lot is analyzed to confirm identity, purity, and critical impurity profiles (including halides and water content). A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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., argon or nitrogen) 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. Keep away from strong acids, strong bases, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Water Content (Karl Fischer)	≤ 100 ppm
Halides (Cl⁻, Br⁻) (IC)	≤ 50 ppm
Density (at 20°C)	~1.52 g/cm³
Viscosity (at 20°C)	Contact for details

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