Description

Lithium Perfluorobutanesulfonate (CAS No. 131651-65-5) is a high-purity, fluorinated lithium salt with the molecular formula C₄F₉LiO₃S and IUPAC name lithium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate. This specialized compound is engineered for advanced electrochemical applications, offering exceptional thermal stability, hydrophobicity, and ionic conductivity. Its perfluorinated butyl chain enhances solubility in non-aqueous electrolytes while maintaining low viscosity, making it ideal for high-performance lithium-ion battery formulations. With a purity grade tailored for research and industrial use, this product is rigorously tested to ensure consistency in conductivity, moisture content (<50 ppm), and trace metal impurities. Suitable for use as a supporting electrolyte, additive, or co-salt in next-generation energy storage systems, supercapacitors, and specialty chemical synthesis. Packaged under inert gas to preserve integrity, each batch includes comprehensive analytical documentation (HPLC, NMR, ICP-MS).

Properties

• CAS Number: 131651-65-5
• Complexity: 393
• IUPAC Name: lithium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate
• InChI: InChI=1S/C4HF9O3S.Li/c5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16;/h(H,14,15,16);/q;+1/p-1
• InChI Key: FEDFHMISXKDOJI-UHFFFAOYSA-M
• Exact Mass: 305.95844692
• Molecular Formula: C4F9LiO3S
• Molecular Weight: 306.1
• SMILES: [Li+].C(C(C(F)(F)S(=O)(=O)[O-])(F)F)(C(F)(F)F)(F)F
• Topological: 65.6
• Monoisotopic Mass: 305.95844692
• Synonyms: 131651-65-5, lithium perfluorobutanesulfonate, DTXSID30635586, DTXCID80586337, 671-827-8, Lithium Nonafluoro-1-butanesulfonate, Lithium nonafluorobutanesulfonate, Lithium nonafluorobutanesulphonate, Nonafluoro-1-butanesulfonic Acid Lithium Salt, Lithium Perfluoro-1-butanesulfonate, lithium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate, Lithium nonafluorobutane-1-sulfonate, C4F9LiO3S, SCHEMBL443931, LithiumNonafluoro-1-butanesulfonate, MFCD03094160, AKOS005063536, CS-0209469, N0710, NS00109885, Perfluoro-1-butanesulfonic Acid Lithium Salt, D91766, Lithium Nonafluoro-1-butanesulfonate, >/=95%, A806294, lithium 1,1,2,2,3,3,4,4,4-nonafluoro-1-butanesulfonate, lithium 1,1,2,2,3,3,4,4,4-nonakis(fluoranyl)butane-1-sulfonate

Application

Lithium perfluorobutanesulfonate is primarily utilized as a conductive salt in advanced lithium-ion batteries, where its perfluorinated structure improves electrolyte stability at high voltages (>4.5V). Researchers employ it to enhance cycle life in lithium-sulfur batteries by mitigating polysulfide shuttling. The compound also serves as a hydrophobic electrolyte additive for electrochemical sensors operating in humid environments. In organic synthesis, it acts as a Lewis acid catalyst for fluorination reactions.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (100%)

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