Description

Lithium bis(fluorosulfonyl)imide (LiFSI) is a high-performance lithium salt widely utilized in advanced electrochemical applications, particularly in next-generation lithium-ion and lithium-metal batteries. With the molecular formula F₂LiNO₄S₂, this ultra-dry, 99.9% trace metals basis compound offers superior thermal stability, high ionic conductivity, and excellent electrochemical compatibility compared to traditional lithium salts like LiPF₆. LiFSI is an ideal electrolyte additive or primary conducting salt for high-voltage and high-energy-density battery systems, enabling improved cycle life, enhanced safety, and reduced interfacial resistance. Its exceptional solubility in organic carbonate solvents and ionic liquids makes it a preferred choice for researchers and engineers developing cutting-edge energy storage solutions. This product is rigorously purified to minimize impurities, ensuring optimal performance in sensitive applications such as solid-state batteries, supercapacitors, and specialty electrochemical devices.

Properties

• CAS Number: 171611-11-3
• Complexity: 235
• IUPAC Name: lithium;bis(fluorosulfonyl)azanide
• InChI: InChI=1S/F2NO4S2.Li/c1-8(4,5)3-9(2,6)7;/q-1;+1
• InChI Key: VDVLPSWVDYJFRW-UHFFFAOYSA-N
• Exact Mass: 186.93968459
• Molecular Formula: F2LiNO4S2
• Molecular Weight: 187.1
• SMILES: [Li+].[N-](S(=O)(=O)F)S(=O)(=O)F
• Topological: 86
• Monoisotopic Mass: 186.93968459
• Physical Description: Dry Powder
• Synonyms: 171611-11-3, Lithium bis(fluorosulfonyl)imide, Imidodisulfuryl fluoride, lithium salt (1:1), DTXSID70893365, DTXCID601323346, 686-526-7, 924-516-9, Imidodisulfuryl fluoride lithium salt, Lithium bis(fluorosulfonyl)amide, Lithium;bis(fluorosulfonyl)azanide, [bis(fluorosulfonyl)amino]lithium, Lithium bis(fluorosulfonyl)amide (Lithium Battery Grade), Imidodisulfuryl fluoride lithium salt (LiFSI), LiFSI, MFCD28126786, SCHEMBL278675, Lithiumbis(fluorosulfonyl)amide, VDVLPSWVDYJFRW-UHFFFAOYSA-N, AKOS027439973, AKOS040767419, FS-5705, SB66388, lithium(1+) ion bis(fluorosulfonyl)azanide, L0281, D91262, EN300-6737897, Lithium bis(fluorosulfonyl)imide, ultra dry, 99.9% trace metals basis

Lithium bis(fluorosulfonyl)imide (LiFSI) is primarily used as a conductive salt in lithium-ion and lithium-metal battery electrolytes, offering enhanced thermal and electrochemical stability. It enables higher operating voltages (>4.5V) and improves cycle life in high-energy-density applications like electric vehicles and grid storage. LiFSI also serves as a key component in solid polymer electrolytes and ionic liquid-based systems for advanced battery technologies.

Safety and Hazards

GHS Hazard Statements

• H302 (77.1%): Harmful if swallowed [Warning Acute toxicity, oral]
• H313 (11.7%): May be harmful in contact with skin [Warning Acute toxicity, dermal]
• H314 (20.6%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H315 (77.1%): Causes skin irritation [Warning Skin corrosion/irritation]
• H318 (77.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H341 (12.6%): Suspected of causing genetic defects [Warning Germ cell mutagenicity]
• H361 (30%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
• H361fd (46.6%): Suspected of damaging fertility; Suspected of damaging the unborn child [Warning Reproductive toxicity]

Precautionary Statements

• P203, P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P317, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P318, P321, P330, P332+P317, P362+P364, P363, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (66.7%)
• Acute Tox. 4 (33.3%)
• Skin Corr. 1B (66.7%)
• Skin Irrit. 2 (33.3%)
• Skin Sens. 1 (33.3%)
• Eye Dam. 1 (100%)
• Repr. 2 (33.3%)
• Aquatic Chronic 3 (66.7%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.