Description

1-Butyl-1-Methylpyrrolidinium Bis(Fluorosulfonyl)Imide is a high-purity ionic liquid belonging to the pyrrolidinium cation family, valued for its exceptional electrochemical stability and low viscosity. Its primary commercial significance lies in its role as a key electrolyte component for next-generation energy storage devices, enabling superior performance and safety. This advanced material is essential for researchers and manufacturers in the lithium-ion battery, supercapacitor, and electroplating industries seeking to enhance conductivity and thermal operating windows.

Application

• Advanced Lithium-Ion Battery Electrolytes: Used as a co-solvent or additive to improve ionic conductivity, widen the electrochemical window, and enhance thermal stability and safety in high-voltage battery systems.
• Supercapacitor (Electrochemical Capacitor) Formulations: Serves as an electrolyte to enable higher energy density and power output due to its wide voltage stability and low volatility.
• Electrochemical Deposition & Metal Plating: Employed as a non-aqueous electrolyte medium for the electrodeposition of reactive metals like aluminum, magnesium, and lithium, where traditional aqueous systems fail.
• Gas Separation & Capture Media: Utilized in supported ionic liquid membranes (SILMs) for selective separation of gases such as CO₂, SO₂, or H₂S from industrial streams.
• Chemical Synthesis & Catalysis: Acts as a green solvent or catalyst support for various organic reactions, including Diels-Alder, Friedel-Crafts, and hydrogenation, facilitating easier product separation.
• Lubricants & Additives: Incorporated as a high-performance additive in synthetic lubricants to reduce friction and wear under extreme pressure and temperature conditions.

Basic Information

Product Name	1-Butyl-1-Methylpyrrolidinium Bis(Fluorosulfonyl)Imide
CAS No.	1057745-51-3
Molecular Formula	C₉H₂₀F₂N₂O₄S₂
Molecular Weight	322.39 g/mol
Synonyms	[BMP][FSI]; BMPyrr FSI; 1-Butyl-1-methylpyrrolidinium bis(fluorosulfonyl)imide; N-Butyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide; BMPyrr bis(FSO₂)₂N; BMP-TFSI analog; Pyrrolidinium, 1-butyl-1-methyl-, bis(fluorosulfonyl)amide; Ionic liquid 1057745-51-3
EINECS	Contact for details

Quality Control

Our production of 1-Butyl-1-Methylpyrrolidinium Bis(Fluorosulfonyl)Imide adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for demanding electrochemical applications. Each lot is analyzed using advanced techniques including NMR, HPLC, and ICP-MS to verify identity, assay, and trace metal/impurity levels. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and R&D documentation.

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 (NMR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Water Content (Karl Fischer)	≤ 100 ppm
Halide Content (Cl⁻, Br⁻)	≤ 50 ppm
Trace Metals (ICP-MS)	≤ 10 ppm total
Density (at 20°C)	~1.38 g/cm³
Viscosity (at 20°C)	~80 mPa·s

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