Description

Triethylsulfonium Bis(Trifluoromethylsulfonyl)Imide is a high-purity ionic liquid salt, also known as [Et3S][TFSI] or [Et3S][NTf2]. This compound is valued for its excellent electrochemical stability, high ionic conductivity, and low volatility, making it a critical component in advanced energy storage and material science applications. It is primarily sought by researchers and manufacturers in the fields of lithium-ion battery electrolytes, supercapacitors, and as a versatile reagent in organic synthesis and catalysis.

Application

• Electrolyte Additive for Lithium-Ion Batteries: Used to enhance ionic conductivity, improve thermal stability, and form stable solid-electrolyte interphase (SEI) layers.
• Electrolyte Component for Supercapacitors: Employed in high-performance, non-aqueous electrolytes to increase operating voltage windows and energy density.
• Ionic Liquid Solvent/Medium: Serves as a green, non-volatile solvent for organic reactions, electrochemistry, and separation processes.
• Catalyst or Co-catalyst in Organic Synthesis: Utilized in various alkylation, polymerization, and other catalytic reactions due to its unique sulfonium cation.
• Antistatic Agent: Incorporated into polymers and coatings to provide durable antistatic properties.
• Research & Development: A key material for academic and industrial R&D in novel ionic liquids, electroactive polymers, and advanced electrochemical devices.

Basic Information

Product Name	Triethylsulfonium Bis(Trifluoromethylsulfonyl)Imide
CAS No.	321746-49-0
Molecular Formula	C8H15F6NO4S3
Molecular Weight	399.39 g/mol
Synonyms	Triethylsulfonium bis(trifluoromethanesulfonyl)imide; [Et3S][TFSI]; Triethylsulfonium TFSI; Triethylsulfonium NTf2; Triethylsulfonium bis(trifluoromethylsulfonyl)amide; Triethylsulfonium triflimide; Triethylsulfonium bis(perfluoroethylsulfonyl)imide (common alias); TES TFSI
EINECS	Contact for details

Quality Control

Our Triethylsulfonium Bis(Trifluoromethylsulfonyl)Imide is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity for demanding electrochemical applications. We provide comprehensive Certificates of Analysis (COA) with each batch, detailing key parameters such as assay, anion/cation content, and impurity profiles. Our quality system is designed to support R&D and industrial scale-up with reliable data.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. This product is hygroscopic (moisture-sensitive). For long-term storage, it is recommended to keep the container under an inert atmosphere (e.g., nitrogen or argon) at room temperature (15-25°C).

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Halide Content (as Cl)	≤ 100 ppm
Metal Impurities (ICP-MS)	≤ 10 ppm total

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