INTRODUCTION
Commonly known as potassium bis(fluorosulfonyl)imide (KFSI), the compound has a three-carbon backbone bearing six fluorine atoms and two sulfonimide (-SO₂F) groups. The molecule’s architecture lends it both high chemical stability and useful reactivity. Because of its excellent ionic conductivity and thermal / electrochemical stability, it finds use in advanced electrolyte formulations—for example in lithium-ion and next-generation batteries, in ionic liquids, and in other electrochemical systems.
Manufacture
The synthesis consists of six steps, beginning with a nickel-catalyzed ring opening and di-iodination of 2,2,3-trifluoro-3-(trifluoromethyl)oxirane, followed sequentially by di-sulfonation, di-chlorination, di-fluorination, cyclic amide formation, and finally conversion to the potassium salt through treatment of 1,3-dihydroperfluoropropane bisulfonimide ammonium salt with potassium tert-butoxide.
| Synonyms | Potassium;4,4,5,5,6,6-hexafluoro-1λ6,3λ6-dithia-2-azanidacyclohexane 1,1,3,3-tetraoxide |
| CAS no. | 588668-97-7 |
| EINECS no. | 224-335-9 |
| Molecular formula | C₃F₆KNO₄S₂ |
| Molecular weight | 331.24 g/mol |
| Structure |  |
Applications
KFSI is a highly specialized compound known for its unique properties and versatility in various applications
| Electrolyte in Batteries: |
| It serves as an effective electrolyte salt in lithium-ion & potassium ion systems, enhancing their performance and longevity. Its excellent thermal stability and electrochemical properties make it an ideal choice for energy storage systems, particularly in high-performance applications such as electric vehicles and renewable energy storage. |
| In Photoresists / Microelectronics: |
| Component in photoacid generators, supporting microfabrication and lithography processes. |
| Solid Polymer Electrolyte: |
| When blended with polymers, it boosts thermal stability and enables the creation of advanced fluorinated materials and specialty chemicals, essential to next-generation electronics and aerospace solutions. |
| Fluorinated Surfactants: |
| Used in the formulation of fluorinated surfactants, which are valuable in various cleaning products and coatings due to their excellent wetting properties and resistance to dirt and stains. |
| In preparation of graphite intercalation compounds (GICs) containing the cyclo hexafluoropropane-1,3-bis(sulfonyl)amide anion. |
SPECIFICATIONS
| Test | Unit | Specification |
|---|---|---|
| Appearance | – | White to almost white powder |
| Water Content | % | Max 1.0 |
| Purity | % Area | Min 95.0 |
STORAGE & PRECAUTION
Store at ambient conditions
PACKING
Compliant with international regulations
REACH Status
Not registered
ExSyn offers 1,1,2,2,3,3-Hexafluoropropane-1,3-disulfonimide Potassium Salt on commercial scales and welcomes enquiries. No matter the quantity you need, our exceptional quality and service will make ExSyn your supplier of choice! If you need any additional information or SDS, please contact us.
Glycolaldehyde dimer is the cyclic dimeric form of glycolaldehyde, the simplest hydroxyaldehyde. Glycolaldehyde is often supplied as stable dimeric solid, commonly identified as 2,5-dihydroxy-1,4-dioxane.
N,N-Diisopropylethylamine (DIPEA), also known as Hünig’s Base, is a sterically hindered tertiary amine. It is a colorless liquid with a strong amine odor and is widely used as a low nucleophilic organic base in pharmaceutical, agrochemical, and fine chemical synthesis. Due to its bulky structure, DIPEA effectively scavenges acids without participating in unwanted side reactions.
Tris(2,4-di-tert-butylphenyl) phosphite (TDPP) often recognized commercially as Irgafos 168 is a high-performance organophosphorus compound primarily utilized as secondary antioxidant and processing stabilizer. Its characteristic to undergo metallation reaction and provide a cost-effective synthetic processes allows it to be useful in biaryl coupling reactions.
Undecylenic acid is an unsaturated fatty acid naturally derived from castor oil. It is a colorless to pale yellow liquid with antifungal and antimicrobial properties. Chemically known as 10-undecenoic acid, it contains an 11-carbon chain with one double bond and is widely used in pharmaceuticals
5-Nitro Isophthalic Acid (5-NIPA) is an aromatic organic compound derived from isophthalic acid. The presence of two carboxylic acid groups along with a nitro substituent at the 5-position makes it a valuable intermediate in the manufacture of fine chemicals, pharmaceuticals, dyes, pigments, and advanced materials.
Trichloroacetonitrile is a halogenated organic compound belonging to nitrile family. Its strong electrophilic character makes it a valuable intermediate in organic synthesis. It readily undergoes hydrolysis, particularly under acidic or basic conditions, yielding trichloroacetamide and related derivatives.
Zinc Dialkyl Dithio Phosphate (ZDDP) belongs to a family of coordination compounds classified as members of transition metal dithiophosphate.
ZDDP is widely used based on a combination of different selected alcohols thus providing antiwear performance and enhanced thermal and hydrolytic stability. In combination with other additives, it is especially used for the formulation of hydraulic fluids, industrial gear oils, metalworking fluids, greases and automotive engine oils.
Dibutyl sulfide is an organosulfur. It is a clear, colorless to pale yellow liquid characterized by a strong sulfur-like odor and is primarily used as an intermediate in chemical synthesis, specialty organic manufacturing, and research applications. The compound exhibits good solvency properties and moderate thermal stability, making it useful in industrial and laboratory processes involving sulfur-containing organic compounds.
Oleylamine is a long-chain (C18) primary fatty amine derived from natural fatty acids, typically sourced from vegetable oils. It is produced from oleic acid through conversion of the carboxylic acid group (–COOH) into an amine group (–NH₂). With its optimal balance of hydrophobic chain length and reactive amine functionality it serves as a versatile and dependable building block for high-performance formulations.