936049

Sodium bis(trifluoromethylsulfonyl)imide

≥99.5% trace metals basis, anhydrous, battery grade

• Synonym(s): Sodium trifluoromethanesulfonimide, NaTFSI, Sodium triflimide, Sodium bis(trifluoromethylsulfonyl)imide
• Empirical Formula (Hill Notation): C₂F₆NNaO₄S₂
• CAS Number: 91742-21-1
• Molecular Weight: 303.14
• MDL number: MFCD14156021
• UNSPSC Code: 12352104

Properties

• grade: battery grade
• Quality Level: 100
• Assay: ≥99.5% trace metals basis
• form: powder
• greener alternative product characteristics: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• impurities: ≤5000 ppm (trace metals analysis); ≤5000 ppm Trace metals
• mp: 257.1-258.4 °C
• application(s): battery manufacturing
• greener alternative category: Enabling
• SMILES string: FC(F)(F)S(=O)(=O)N([Na])S(=O)(=O)C(F)(F)F
• InChI: 1S/C2F6NO4S2.Na/c3-1(4,5)14(10,11)9-15(12,13)2(6,7)8;/q-1;+1
• InChI key: YLKTWKVVQDCJFL-UHFFFAOYSA-N

Description

General description

Sodium bis(trifluoromethanesulfonyl)imide, abbreviated NaTFSI, is a white, crystalline salt. It is hygroscopic and deliquescent and usually stored under inert atmosphere. NaTFSI is soluble in water, carbonates (including dimethyl carbonate, diethyl carbonate, and propylene carbonate), acetonitrile, triglyme, dimethoxyethane, trimethyl phosphate, and many of the solvents commonly used in batteries.

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Application

The primary application of NaTFSI is as an electrolytic salt in sodium-ion batteries. Researchers have found that NaTFSI dissolved in organic solvents[1] and, more recently, in ionic liquids[2,3] serve as high-performing electrolytes with a broad operating voltage exceeding 3 V. In addition, in the application of solid electrolytes for sodium-ion batteries, NaTFSI is often added to poly(ethylene oxide)-ceramic composites because it increases the ionic conductivity of the composite.[4,5]

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H314
• Precautionary Statements: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Skin Corr. 1B
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable