Description

1-Ethyl-1-Methylpyrrolidin-1-Ium Bis(Fluorosulfonyl)Imide is a high-purity ionic liquid salt, a key component in advanced electrolyte formulations. This compound is valued for its exceptional electrochemical stability and ionic conductivity, which are critical for enhancing battery performance and safety. It is primarily sought by manufacturers and researchers in the energy storage sector, particularly for next-generation lithium-ion and lithium-metal batteries.

Application

• Electrolyte Additive/Salt for Lithium-Ion Batteries: Used to improve cycle life, thermal stability, and high-voltage performance of lithium-ion cells.
• Solid-State Electrolyte Component: Incorporated into polymer or ceramic-based solid electrolytes to enhance ionic conductivity and interfacial stability.
• Electrolyte for Lithium-Metal Batteries: Employed to stabilize the lithium metal anode and suppress dendrite formation, enabling safer and higher-energy-density batteries.
• Supercapacitor Electrolyte: Serves as a conductive salt in high-performance supercapacitors requiring a wide electrochemical window.
• Research & Development: A critical material for academic and industrial R&D focused on novel electrochemical devices and energy storage solutions.
• Specialty Chemical Synthesis: Acts as a precursor or catalyst in specific organic synthesis and materials science applications.

Basic Information

Product Name	1-Ethyl-1-Methylpyrrolidin-1-Ium Bis(Fluorosulfonyl)Imide
CAS No.	950488-21-8
Molecular Formula	C7H16F2N2O4S2
Molecular Weight	318.34 g/mol
Synonyms	1-Ethyl-1-methylpyrrolidinium bis(fluorosulfonyl)imide; EMPyrFSI; N-Ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide; [EMPyr][FSI]; 1-Ethyl-1-methylpyrrolidinium bis(fluorosulfonyl)amide; FSI-based ionic liquid; Battery-grade ionic liquid; Lithium battery electrolyte salt
EINECS	Contact for details

Quality Control

Our production of 1-Ethyl-1-Methylpyrrolidin-1-Ium Bis(Fluorosulfonyl)Imide adheres to stringent quality protocols to ensure batch-to-batch consistency and high electrochemical purity. Each lot is analyzed to meet exacting specifications for critical parameters such as ionic conductivity, moisture content, and metallic impurities. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored 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 prevent moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.5%
Water Content (KF)	≤ 50 ppm
Chloride (Cl⁻)	≤ 10 ppm
Sulfate (SO₄²⁻)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 5 ppm
Lithium (Li)	≤ 1 ppm
Iron (Fe)	≤ 1 ppm
Conductivity	Reported on COA

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