14984-73-7

Basic information

• Product Name: Imidodisulfurylfluoride
• Synonyms: Bis(fluorosulfonyl)amine;Bis(fluorosulfonyl)imide; Bis(fluorosulfuryl)imine; Imidobis(fluorosulfate);Imidobis(sulfuryl fluoride)
• CAS NO: 14984-73-7
• Molecular Formula: F2H N O4 S2
• Molecular Weight: 181.141
• Mol File: 14984-73-7.mol

Chemical Properties

• CAS DataBase Reference: Imidodisulfurylfluoride(CAS DataBase Reference)
• NIST Chemistry Reference: Imidodisulfurylfluoride(14984-73-7)
• EPA Substance Registry System: Imidodisulfurylfluoride(14984-73-7)

Safety Data

• Hazardous Substances Data: 14984-73-7(Hazardous Substances Data)

Usage

Uses

Used in Pharmaceutical Industry:
Imidodisulfurylfluoride is used as a fluorinating agent for the synthesis of pharmaceutical compounds. Its ability to selectively introduce fluorine atoms into specific functional groups allows for the development of new drugs with improved properties, such as increased potency, selectivity, and metabolic stability.
Used in Agrochemical Industry:
Imidodisulfurylfluoride is used as a fluorinating agent in the synthesis of agrochemicals. The introduction of fluorine atoms can enhance the biological activity and selectivity of these compounds, leading to more effective and environmentally friendly pesticides and herbicides.
Used in Polymer and Material Science:
Imidodisulfurylfluoride is used as a fluorinating agent in the production of fluorinated polymers and materials. The incorporation of fluorine atoms can impart unique properties to these materials, such as increased chemical and thermal stability, hydrophobicity, and non-stick characteristics, making them suitable for various applications in industries like electronics, automotive, and aerospace.

Synthetic route

1,1,1,3,3,3-hexamethyl-disilazane (999-97-3) → trimethylsilyl fluoride (420-56-4) + bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
With fluorosulfonyl fluoride In acetonitrile at 20 - 90℃; for 3h; Autoclave;	A n/a B 98%

bis(chlorosulfonyl)amine (15873-42-4) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
With perfluorooctylsulfonyl fluoride; hydrogen fluoride at 65 - 70℃; for 15h; Time;	95.3%
With hydrogen fluoride; dimethyl sulfate at 90℃; for 16h; Reagent/catalyst; Inert atmosphere;	90%
With zinc(II) fluoride In acetic acid butyl ester at 25℃; for 6h; Product distribution / selectivity; Inert atmosphere;	79%

1,1,1,3,3,3-hexamethyl-disilazane (999-97-3) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
With fluorosulfonyl fluoride In ethyl acetate at 100℃; for 3h; Solvent; Temperature; Autoclave;	95%

bis(chlorosulfonyl)amine (15873-42-4) + bismuth trifluoride → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
at 20℃; for 12h; Concentration; Inert atmosphere;	90%
at 20 - 50℃;	Ca. 93 g

bis(chlorosulfonyl)amine (15873-42-4) + hydrogen fluoride (7664-39-3) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
With chlorosulfonic acid; isocyanate de chlorosulfonyle at 160℃; under 60006 Torr; for 0.25h; Reagent/catalyst; Temperature; Pressure; Time;	89%
at 130℃; for 2h; Product distribution / selectivity; Autoclave;	55%

fluorosulphonic acid (7789-21-1) + urea (57-13-6) → sodium fluorosulfonate (14483-63-7) + bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
With sodium chloride In dichloromethane distn. of a react.-mixt. of urea and HSO3F under vac.; distillate dissolved in CH2Cl2; NaCl added; stirred for 6 h under reflux;; NaSO3F filtered off; filtrate cooled to -80°C; filtn., recrystn. (CFCl3, -80°C).;	A n/a B 87.8%

bis(chlorosulfonyl)amine (15873-42-4) + zinc(II) fluoride + ammonia (7664-41-7) → {Zn(NH3)4}(2+)*2Cl(1-)={Zn(NH3)4}Cl2 + bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
Stage #1: bis(chlorosulfonyl)amine; zinc(II) fluoride In acetic acid butyl ester at 25℃; for 6h; Inert atmosphere; Stage #2: ammonia In acetic acid butyl ester; water Product distribution / selectivity;	A n/a B 81%

chlorosulfonic acid (7790-94-5) + aminosulfonic acid (5329-14-6) + thionyl fluoride (7783-42-8) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
In 1,2-dichloro-ethane at 80℃; under 16501.7 Torr; for 17h; Solvent; Autoclave;	77%

bis(chlorosulfonyl)amine (15873-42-4) + antimony(III) fluoride (7783-56-4) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
In neat (no solvent) absence of air and moisture; slight excess amine, stirring for 4 h; fractional distn. (25°C, 0.01 Torr), decantation from residual SbCl3;	70%

potassium bis(fluorosulfuryl)amide + fluorosulphonic acid (7789-21-1) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
In neat (no solvent) under dry N2; KN(SO2F)2 placed in dry Schlenk vessel and HSO3F added under stream of dry nitrogen; mixture stirred with a glass stick and allowed to stay for one hour; HN(SO2F)2 distilled off under vacuum; contains small amounts of HSO3F according to (19)F-NMR;	62%

fluorosulfonyl fluoride (640723-20-2, 2699-79-8, 12769-73-2) + aminosulfonic acid (5329-14-6) + fluorosulphonic acid (7789-21-1) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
In 1,2-dichloro-ethane at 92℃; under 27752.8 Torr; for 10h; Solvent; Autoclave;	53%

thionyl chloride (7719-09-7) + fluorosulphonic acid (7789-21-1) + urea (57-13-6) → imido-bis(sulfuric acid) fluoride chloride (237763-01-8) + bis(fluorosulfonyl)amide (14984-73-7)

Conditions

Yield

In thionyl chloride under dry N2; urea placed into a flask and flask immersed to a cold water bath; thionyl chloride added; HSO3F added dropwise, then the flask fitted with a reflux condenser, connected to a CaCl2 drying tube; heated at110°C for 42 h; reaction mixture fractionally distilled under vacuum; main fraction collected in the range 45-65°C/650 Pa; mixture of HN(SO2F)2, HN(SO2Cl)(SO2F), HSO3F in a ratio of 2.9:2.3:1 according to (19)F-NMR;

thionyl chloride (7719-09-7) + aminosulfonic acid (5329-14-6) + fluorosulphonic acid (7789-21-1) → imido-bis(sulfuric acid) fluoride chloride (237763-01-8) + bis(fluorosulfonyl)amide (14984-73-7)

Conditions

Yield

In thionyl chloride amidosulfuric acid placed into a flask and thionyl dichloride added under dry argon; HSO3F added dropwise, then the flask fitted with a reflux condenser, connected to a CaCl2 drying tube; heated at 120°C for 38 h; reaction mixture fractionally distilled under vacuum; main fraction collected in the range 47-80°C/650 Pa; mixture of HN(SO2F)2, HN(SO2Cl)(SO2F), HSO3F in a ratio of 4.8:10.5:1 according to (19)F-NMR;

fluorosulfonyl isocyanate (1495-51-8) + fluorosulphonic acid (7789-21-1) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
In not given byproducts: CO2; distilled;

potassium fluoride + bis(chlorosulfonyl)amine (15873-42-4) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
In acetonitrile at 25℃; for 24h;

potassium bis(fluorosulfuryl)amide + perchloric acid (7601-90-3) → bis(fluorosulfonyl)amide (14984-73-7)

fluorosulfonyl fluoride (640723-20-2, 2699-79-8, 12769-73-2) + ammonia (7664-41-7) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
With N,N,N'N'-tetramethyl-1,3-propanediamine In acetonitrile at 11 - 25℃; under 123 - 760 Torr; for 13h; Product distribution / selectivity; Industry scale;

fluorosulphonic acid (7789-21-1) + urea (57-13-6) → bis(fluorosulfonyl)amide (14984-73-7)

Conditions	Yield
at 120℃; Large scale;

dimethylmercury (593-74-8) + bis(fluorosulfonyl)amide (14984-73-7) → MeHg(N(SO2F)2)

Conditions	Yield
In dichloromethane at 0 - 20℃; Schlenk technique; Inert atmosphere;	100%

tetramethylstannane (594-27-4) + bis(fluorosulfonyl)amide (14984-73-7) → trimethyltin(IV) di(fluorosulfonyl)amide (7240-46-2)

Conditions	Yield
In dichloromethane N2 atm.; equimolar ratio, refluxing (4 h); evapn.; elem. anal.;	97%

bis(fluorosulfonyl)amide (14984-73-7) + cyhexatin (13121-70-5) → tricyclohexyltin(IV)-di(fluorosulfonyl)amide (187884-60-2)

Conditions	Yield
With Na2SO4 In dichloromethane N2 atm.; equimolar ratio, stirring (1 h); filtn., evapn. (vac.); elem. anal.;	97%

ammonia (7664-41-7) + bis(fluorosulfonyl)amide (14984-73-7) → ammonium imido-bis(sulfuric acid fluoride)

Conditions	Yield
In trichlorofluoromethane dropwise addn. of CFCl3 to HN(SO2F)2 (exclusion of moisture), NH3 flow is passed into this soln. at room temp. until ppt. dissolves; evapn. under reduced pressure, washing with CFCl3, elem. anal.;	96.5%

bis(fluorosulfonyl)amide (14984-73-7) → bis(fluorosulfonyl)imide lithium salt

Conditions	Yield
With lithium acetate; acetic acid at 0 - 5℃; for 4h; Reagent/catalyst;	94.9%
With lithium hydroxide In water Product distribution / selectivity;	90%
With lithium fluoride; carbonic acid dimethyl ester at 0 - 5℃; for 3h; Reagent/catalyst;

zinc(II) trifluoroacetate (21907-47-1) + bis(fluorosulfonyl)amide (14984-73-7) → zinc salt of bis[di(fluorosulfonyl)]amine

Conditions	Yield
In trifluoroacetic acid byproducts: CF3COOH; Excess of HN(SO2F)2 is added to Zn(OOCCF3)2, the mixture is refluxed for 16 h.; compd. is filtered, washed with CF3COOH, CH2Cl2, dried in vacuo at 80°C, elem. anal.;	92%

lithium carbonate (554-13-2) + bis(fluorosulfonyl)amide (14984-73-7) → bis(fluorosulfonyl)imide lithium salt

Conditions	Yield
In water at -78 - 20℃; pH=7;	92%
In water pH=7;

cobalt trifluoroacetate (6185-58-6, 24517-83-7, 50517-80-1) + bis(fluorosulfonyl)amide (14984-73-7) → cobalt(II) bis(fluorosulphuryl)imide

Conditions	Yield
In trifluoroacetic acid Addn. of excess HN(SO2F)2 to Co(O2CCF3) soln. under N2, refluxing (14 h), pink solid forms.; Filtn. under positive N2 pressure, washing (trifluoroacetic acid, CH2Cl2), drying in vac., elem. anal.;	91%

Tetramethylblei-(IV) (75-74-1) + bis(fluorosulfonyl)amide (14984-73-7) → trimethyllead(IV)-di(fluorosulfonyl)amide (187884-58-8)

Conditions	Yield
In dichloromethane N2 atm.; refluxing (3 h); evapn., recrystn. (CH2Cl2/petroleum ether 3/1); elem. anal.;	87%

xenon difluoride (13709-36-9) + bis(fluorosulfonyl)amide (14984-73-7) → fluoro[imidobis(sulfuryl fluoride)]xenon(II) (53719-78-1)

Conditions	Yield
In Dichlorodifluoromethane byproducts: HF; HN(SO2F)2 syringed onto vessel with XeF2 cooled to -196°C, dry CF2Cl2 condensed onto sample at -196°C, warmed to 0°C with vigorously agitation, when formed HF extd. into upper CF2Cl2 layer, mixt. stood for 1 d at 0°C; volatiles removed in vac. at 0°C, tube and contents allowed to warm to room temp., pumped;	86%

xenon fluoride + bis(fluorosulfonyl)amide (14984-73-7) → fluoro[imidobis(sulfuryl fluoride)]xenon(II) (53719-78-1)

Conditions	Yield
With CF2Cl2 liquid HN(SO2F)2 was syringed onto XeF2 at -196°C, then CF2Cl2 was condenced on to the sample and warmed to 0°C with vogorous agitation for 1 day, when HF was exctrated into upper CF2Cl2 layer; CF2Cl2 and HF were removed in vac. at 0°C, a residue was warmed to room temp. and XeF2 was removed in vac.;	86%

xenon difluoride (13709-36-9) + bis(fluorosulfonyl)amide (14984-73-7) → fluoro[imidobis(sulfuryl fluoride)]xenon(II) (53719-78-1) + hydrogen fluoride (7664-39-3)

Conditions	Yield
In Dichlorodifluoromethane 3 d at 0°C, 1:1 molar ratio; The reactor was pumped for 3 h at 0°C to remove the byproducts, elem. anal.;	A 80% B n/a

bis(fluorosulfonyl)amide (14984-73-7) + lithium hydroxide (1310-65-2) → bis(fluorosulfonyl)imide lithium salt

Conditions	Yield
In isopropyl alcohol at 20℃; for 7h;	73%

tetramethylgermane (865-52-1) + bis(fluorosulfonyl)amide (14984-73-7) → trimethylgermyl-di(fluorosulfonyl)amine (187884-57-7)

Conditions	Yield
In dichloromethane N2 atm.; 18 h, 20°C; evapn., distn. (vac.); elem. anal.;	63%

Tetraphenyllead (595-89-1) + bis(fluorosulfonyl)amide (14984-73-7) → triphenyllead(IV)-di(fluorosulfonyl)amide (187884-62-4)

Conditions	Yield
In dichloromethane N2 atm.; equimolar ratio, refluxing (2 d); filtn., evapn., washing (CCl4), drying (vac.); elem. anal.;	43%

xenon difluoride (13709-36-9) + bis(fluorosulfonyl)amide (14984-73-7) → Xe[N(SO2F)2]2 (85883-06-3) + hydrogen fluoride (7664-39-3)

Conditions	Yield
In Dichlorodifluoromethane byproducts: [N(SO2F)2]2, SO2F2, HF; 2 weeks from -22°C to -12°C, 2:1 molar ratio; The reactor was pumped at -4°C to remove the byproducts, elem. anal.;	A 20% B n/a

cadmium(II) trifluoroacetate (37054-04-9) + bis(fluorosulfonyl)amide (14984-73-7) → cadmium(II) bis(bis(fluorosulphuryl)imide)

Conditions	Yield
In trifluoroacetic acid byproducts: CF3COOH; Excess of HN(SO2F)2 is added to Cd(OOCCF3)2, the mixture is refluxed for 16 h.; compd. is filtered, washed with CF3COOH, CH2Cl2, dried in vacuo at 80°C, elem. anal.;	>90

Upstream product

• 7719-09-7 thionyl chloride 
• 7789-21-1 fluorosulphonic acid 
• 57-13-6 urea 
• 5329-14-6 aminosulfonic acid 
• 15873-42-4 bis(chlorosulfonyl)amine 
• 7783-56-4 antimony(III) fluoride 
• 1495-51-8 fluorosulfonyl isocyanate 
• 7664-39-3 hydrogen fluoride 
• 999-97-3 1,1,1,3,3,3-hexamethyl-disilazane 
• 7790-94-5 chlorosulfonic acid 
• 7783-42-8 thionyl fluoride 
• 640723-20-2 fluorosulfonyl fluoride 
• 7664-41-7 ammonia 
• 7601-90-3 perchloric acid 

Downstream Products

• 187884-62-4 triphenyllead(IV)-di(fluorosulfonyl)amide 
• 187884-60-2 tricyclohexyltin(IV)-di(fluorosulfonyl)amide 
• 85883-06-3 Xe[N(SO₂F)2]2 
• 7664-39-3 hydrogen fluoride 
• 53719-78-1 fluoro[imidobis(sulfuryl fluoride)]xenon(II) 

Relevant articles and documents

Synthesis of Poly- And the First Perfluoroalkyl-N(SO2F)2 Derivatives: Improved Methods for the Preparation of XN(SO2F)2 (X = H, Cl) and Single-Crystal Diffraction Studies of HN(SO2Cl)2, HN(SO2F)2, and CF3CH2N(SO2F)2

The preparation of HN(SO2F)2 was achieved conveniently by fluorination of HN(SO2C1)2 with SbF3. Reactions of Hg[N(SO2F)2]2 with fluoroalkyl iodides RI (R = i-C3F7CH2CH2 and CF3CH2) gave i-C3F7CH2CH2N(SO2F) 2 (1) and CF3CH2N(SO2F)2 (2). The chlorination of Hg[N(SO2F)2]2 provided a high-yield method of synthesizing the well-known ClN(SO2F)2. N-alkylation of ClN(SO2F)2 with fluorinated ethenes CF2=CHal2 (CHal2 = CF2, CFCl, and CCl2) resulted in the formation of CF2ClCF2N(SO2F)2 (3), CF2ClCFClN(SO2F)2 (4a, major), CFCl2-CF2N(SO2F)2 (4b, minor), and CCl3CF2N(SO2F)2 (5). The synthesis of the first perfluoroalkyl-N(SO2F)2 derivatives CF3N(SO2F)2 (6), C2F5N(SO2F)2 (7), n-C3F7N(SO2F)2 (8), and n-C4F9N(SO2F)2 (9) was accomplished with moderate-to-good yields by reacting ClN(SO2F)2 with iodoperfluoroalkanes RFI (RF = CF3, C2F5, n-C3F7, and n-C4F9). Similarly, ClN(SO2F)2 reacted with CF3CH2I to give 2. Photolysis of ClN(SO2F)2 with iodoperfluoroalkanes RFI (RF = n-C3F7, and n-C4F9) gave 8 and 9 in low yields. HN(SO2F)2 belongs to a monoclinic crystal system P21 (No. 4): a = 5.1619(5) ?, b = 7.8153(8) ?, c = 6.8028(7) ?, β = 100.411(2)°, V= 269.92(5) ?3, Z= 2. HN(SO2Cl)2 is monoclinic P21/c (No. 14): a = 7.7331(3) ?, b = 10.0542(2) ?, c = 9.3197(3) ?, β = 109.495(1)°, V = 683.07(4) ?3, Z= 4. CF3CH2N(SO2F)2 is orthorhombic P212121 (No. 19): a= 11.1245(1) ?, b = 28.8003(4) ?, c = 7.7120 ?, V = 2470.90(4) ?3, Z = 12.

Molecular dynamics simulation and pulsed-field gradient NMR studies of Bis(fluorosulfonyl)imide (FSI) and Bis[(trifluoromethyl)sulfonyl]imide (TFSI)-based ionic liquids

The pulsed-field-gradient spin-echo NMR measurements have been performed on 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide ([emim][FSI]) and 1-ethyl-3-methylimidazolium [bis[(trifluoromethyl)sulfonyl]imide] ([emim][TFSI]) over a wide temperature range from 233 to 400 K. Molecular dynamics (MD) simulations have been performed on [emim][FSI], [emim][TFSI], [N-methyl-N-propylpyrrolidinium][FSI] ([pyr13][FSI]), and [pyr 13][TFSI] utilizing a many-body polarizable force field. An excellent agreement between the ion self-diffusion coefficients from MD simulations and pfg-NMR experiments has been observed for [emim][FSI] and [emim][TFSI] ILs. The structure factor of [pyr13][FSI], [pyr14][TFSI], and [emim][TFSI] agreed well with the previously reported X-ray diffraction data performed by Umebayashi group. Ion packing in the liquid state is compared with packing in the corresponding ionic crystal. Faster transport found in the FSI-based ILs compared to that in TFSI-based ILs is associated with the smaller size of FSI- anion and lower cation-anion binding energies. A significant artificial increase of the barriers (by 3 kcal/mol) for the FSI - anion conformational transitions did not result in slowing down of ion transport, indicating that the ion dynamics is insensitive to the FSI - anion torsional energetic, while the same increase of the TFSI - anion barriers in [emim][TFSI] and [pyr13][TFSI] ILs resulted in slowing down of the cation and anion transport by 40-50%. Details of ion rotational and translational motion, coupling of the rotational and translational relaxation are also discussed. ? 2010 American Chemical Society.

New inorganic ionic liquids possessing low melting temperatures and wide electrochemical windows: Ternary mixtures of alkali bis(fluorosulfonyl)amides

Four kinds of ternary phase diagrams of alkali bis(fluorosulfonyl)amides, LiFSA-NaFSA-KFSA, LiFSA-NaFSA-CsFSA, LiFSA-KFSA-CsFSA and NaFSA-KFSA-CsFSA, have been constructed. All the ternary systems possess the only one eutectic point around equimolar compo

METHOD FOR PREPARING HYDROGEN BIS(FLUOROSULFONYL)IMIDE AND METHOD FOR PREPARING LITHIUM BIS(FLUOROSULFONYL)IMIDE

A method for preparing hydrogen bis(fluorosulfonyl)imide including contacting sulfonyl fluoride with hexamethyl disilazane in an organic solvent. The disclosure also provides a method for preparing lithium bis(fluorosulfonyl)imide (LiFSI). The method includes contacting sulfonyl fluoride with hexamethyl disilazane in an organic solvent and yielding hydrogen bis(fluorosulfonyl)imide; and contacting hydrogen bis(fluorosulfonyl)imide with a lithium compound and yielding lithium bis(fluorosulfonyl)imide.

A bifluoride sulfonyl imide lithium salt preparation method

The invention relates to an imidodisulfuryl fluoride lithium salt preparation method. The method includes steps: (1) fluoridation, to be more specific, adopting imidodisulfuryl chloride and hydrogen fluoride for synthesis of intermediate imidodisulfuryl fluoride under the action of catalysts; (2) subjecting imidodisulfuryl fluoride obtained at the step (1) to reaction with lithium carboxylate to obtain imidodisulfuryl fluoride lithium salt. The method is low in cost, low in by-product quantity and simple in aftertreatment, product quality and purity are guaranteed, and metal ion control is guaranteed especially. Therefore, the preparation method through which high-quality high-purity products can be obtained is economical and suitable for industrial production.

Method for efficiently preparing sulfuryl fluorides compound by catalytic fluorination

The invention belongs to the technical field of the chemical synthesis, and particularly relates to a method for efficiently preparing a sulfuryl fluorides compound by catalytic fluorination. The provided method for efficiently preparing the sulfuryl fluorides compound by the catalytic fluorination comprises the following steps: enabling a sulfonyl chlorides compound to react with a hydroge fluoride under the action of a catalyst of a sulfonic acids derivative, to obtain the sulfuryl fluorides compound. A novel catalytic technology is provided, and the method has extensive substrate applicability. Efficient catalytic efficiency and yield are expressed.

PROCESS FOR PREPARING BIS (FLUOROSULFONYL) IMIDE ACID AND SALTS THEREOF

A process for preparing bis(fluorosulfonyl)imide acid, comprising the reaction of sulfamic acid or a salt thereof with a halosulfuric acid and at least one fluorinating agent selected from SOF2, F-SO2-F and SF4, then the recovery of the bis(fluorosulfonyl)imide acid, is described. Also described is a process for preparing bis(fluorosulfonyl)imide salts from the bis(fluorosulfonyl)imide acid thus prepared.

SALTS FOR MULTIVALENT ION BATTERIES

Methods for preparing electrolyte salts for alkaline earth metal-ion batteries (e.g., calcium and magnesium ion batteries) are described. The electrolyte salts comprise alkaline earth metal (e.g., Mg or Ca) salts of bis(fluorosulfonyl)imide (FSI) and 3,4-dicyano-2-trifluoromethylimidazole (TDI). The methods comprise contacting FSI or TDI with an alkaline earth metal bis(trifluoroacetate) salt in trifluoroacetic acid.

METHOD FOR PREPARATION OF BIS(FLUOROSULFONYL)-IMIDE

The invention relates to a method for the preparation of bis(fluorosulfonyl)-imide and its derivatives at elevated temperature.

Method for producing bis(fluorosulfonyl)imide salt, method for producing fluorosulfate, and method for producing bis(fluorosulfonyl)imide onium salt

According to the method for producing bis(fluorosulfonyl)imide salt of the present invention, the method for producing fluorosulfate, and the method for producing bis(fluorosulfonyl)imide onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt and fluorosulfate. In the methods, bis(fluorosulfonyl)imide salt, fluorosulfate, and bis(fluorosulfonyl)imide onium salt can be obtained safely and easily.