1-Butyl-1-methylpyrrolidinium Bis(fluorosulfonyl)imide(CAS#1057745-51-3)
Introduction
1-Butyl-1-methylpyrrolidine bis(fluorosulfonyl)imide is an ionic liquid. Properties:- Appearance: 1-Butyl-1-methylpyrrolidine bis(fluorosulfonyl)imide is a colorless transparent liquid. - Stability: It has good stability and solubility, and can be used over a wide temperature range and a wide electrochemical window. - Solubility: It is soluble in many organic solvents such as water, acetonitrile, methanol, ethanol, etc. Uses: 1-Butyl-1-methylpyrrolidine bis(fluorosulfonyl)imide has low vapor pressure and good chemical stability, and is commonly used as an electrolyte, catalyst, solvent and reaction medium. It is widely used in energy storage systems such as batteries, capacitors and supercapacitors in the field of electrochemistry, and can be used for the synthesis of ionic liquid catalysts and the conduct of catalytic reactions. Method: 1-butyl-1-methylpyrrolidine bis(fluorosulfonyl)imide can be obtained by reacting 1-methyl-2-pyrrole carbinol with methyl tert-butyl ether, and then by reacting with difluorosulfonic anhydride. Safety Information: 1-Butyl-1-methylpyrrolidine bis(fluorosulfonyl)imide has not been assessed as a chemical with serious hazards to human health. As a chemical substance, proper operating procedures and safe operating procedures should be followed when used. When using or disposing of 1-butyl-1-methylpyrrolidinium-bis(fluorosulfonyl)imide, wear appropriate personal protective equipment and ensure that it is operated in a well-ventilated area.
Application
1-Butyl-1-methylpyrrolidinium Bis(fluorosulfonyl)imide (BMPyrr FSI, PYR14FSI) is a high-purity hydrophobic ionic liquid possessing exceptional physicochemical properties including a wide electrochemical stability window (>5.5 V), low melting point (−18 °C to −7 °C), high ionic conductivity (up to 4.36 mS/cm at room temperature), and ultra-low vapor pressure. It serves as a non-flammable, thermally stable electrolyte for advanced energy storage systems, enabling high-voltage lithium, sodium, and potassium batteries with superior charge-discharge cycle efficiency. As an electrolyte additive or co-solvent, it enhances stable solid-electrolyte interphase (SEI) formation while suppressing dendrite growth and oxidative degradation. PYR14FSI is also widely employed as a supporting electrolyte for supercapacitors requiring low-temperature performance, an electrodeposition medium for reactive metals such as aluminum and magnesium, and a polymer electrolyte plasticizer for flexible electronic devices. Beyond energy applications, the compound acts as a non-volatile, recyclable reaction medium for green chemistry transformations, organometallic catalysis, and gas separation membranes (notably for CO₂ capture). It is also used as an extractant for metal ions, as a surface-functionalization agent for nanomaterials, and in boundary lubrication. Xinchem offers custom synthesis, custom chemical synthesis, and contract manufacturing of high-purity PYR14FSI (>98%–>99%, electronic grade) with full analytical characterization. Flexible scaling from R&D grams to commercial tons, with comprehensive quality documentation for GMP, USP, EP, and REACH compliance. Contact us for a competitive quote and reliable global supply.
