Description

Sodium Bis(Fluorosulfonyl)Imide (CAS NO 100669-96-3) is a high-purity, specialty salt that serves as a critical precursor for advanced electrolyte formulations. Its primary value lies in its role as a key source of the bis(fluorosulfonyl)imide (FSI) anion, which is essential for enhancing the performance and safety of next-generation energy storage devices. This product is indispensable for manufacturers and R&D teams in the lithium-ion battery, supercapacitor, and specialty chemical sectors seeking to develop high-conductivity, thermally stable, and non-flammable electrolytes.

Application

• Lithium-Ion Battery Electrolytes: As a primary source of the FSI anion for formulating high-performance lithium salts (e.g., LiFSI) used in high-voltage and fast-charging battery systems.
• Solid-State & Quasi-Solid Electrolytes: A key raw material in the synthesis of ionic liquids and polymer electrolytes for improved safety and energy density.
• Supercapacitor Electrolytes: Used to create electrolytes that offer wide electrochemical windows and high conductivity for advanced energy storage devices.
• Chemical Synthesis & Catalysis: Serves as a versatile reagent or catalyst component in organic synthesis and specialty fluorochemical production.
• Academic & Industrial R&D: A critical material for research into new ionic conductors, electrochemical systems, and novel fluorinated compounds.

Basic Information

Product Name	Sodium Bis(Fluorosulfonyl)Imide
CAS No.	100669-96-3
Molecular Formula	F2NO4S2Na
Molecular Weight	223.10 g/mol
Synonyms	Sodium FSI; Sodium bis(fluorosulfonyl)amide; Sodium bis(fluorosulfonyl)azanide; FSI Sodium Salt; Sodium 1,1,2,2-tetrafluoro-2-(fluorosulfonyloxy)ethanesulfonimidate; Bis(fluorosulfonyl)imide sodium salt; NaFSI
EINECS	Contact for details

Quality Control

Our Sodium Bis(Fluorosulfonyl)Imide is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity, typically ≥99.0% (by ion chromatography or titration). Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, anion/cation content, moisture (KF), and trace metal impurities. We adhere to relevant industry standards and can support customer-specific qualification requirements.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, this material must be stored in a cool, dry place, ideally under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Recommended long-term storage temperature is 2-8°C. The container must be kept tightly sealed in a dry environment immediately after use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (NaFSI)	≥ 99.0 %
Water Content (KF)	≤ 0.1 %
Anion Purity (IC)	≥ 99.5 %
Sodium Content	Conforms to theoretical
Chloride (Cl)	≤ 50 ppm
Sulfate (SO4)	≤ 100 ppm
Heavy Metals (as Pb)	≤ 10 ppm

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