Back حمض الفلوروكبريتيك Arabic فلوئوروسولفوریک اسید AZB Àcid fluorosulfònic Catalan Fluorsulfonsäure German Fluorosulfata acido Esperanto Ácido fluorosulfónico Spanish فلوئوروسولفوریک اسید Persian Fluoririkkihappo Finnish Acide fluorosulfurique French חומצה פלואורוגופרתית HE

Fluorosulfuric acid

Fluorosulfuric acid
Skeletal formula of fluorosulfuric acid
Skeletal formula of fluorosulfuric acid
Spacefill model of fluorosulfuric acid
Spacefill model of fluorosulfuric acid
Names
IUPAC name
Sulfurofluoridic acid
Systematic IUPAC name
Fluorosulfuric acid[citation needed]
Other names
Fluorosulfonic acid,
Fluorosulphonic acid,
Fluorinesulfonic acid,
Fluorinesulphonic acid,
Fluoridosulfonic acid,
Fluoridosulphonic acid,
Sulfuric fluorohydrin,
Epoxysulfonyl fluoride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.227 Edit this at Wikidata
EC Number
  • 232-149-4
MeSH Fluorosulfonic+acid
RTECS number
  • LP0715000
UNII
UN number 1777
  • InChI=1S/FHO3S/c1-5(2,3)4/h(H,2,3,4) checkY
    Key: UQSQSQZYBQSBJZ-UHFFFAOYSA-N checkY
  • InChI=1/FHO3S/c1-5(2,3)4/h(H,2,3,4)
    Key: UQSQSQZYBQSBJZ-UHFFFAOYAW
  • OS(F)(=O)=O
  • FS(=O)(=O)O
Properties
FHO3S
Molar mass 100.06 g·mol−1
Appearance Colorless liquid
Density 1.726 g cm−3
Melting point −87.5 °C; −125.4 °F; 185.7 K
Boiling point 165.4 °C; 329.6 °F; 438.5 K
Acidity (pKa) -10
Conjugate base Fluorosulfate
Structure
Tetragonal at S
Tetrahedral at S
Hazards
GHS labelling:
GHS07: Exclamation markGHS05: Corrosive
Danger
H314, H332[1]
P261, P271, P280, P303+P361+P353, P304+P340+P310, P305+P351+P338[1]
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazard W+OX: Reacts with water in an unusual or dangerous manner AND is oxidizer
4
0
3
W
OX
Safety data sheet (SDS) ICSC 0996
Related compounds
Related compounds
 Antimony pentafluoride
Trifluoromethanesulfonic acid
Hydrofluoric acid
Sulfurous acid
Sulfuric acid
Sulfur hexafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Fluorosulfuric acid (IUPAC name: sulfurofluoridic acid) is the inorganic compound with the chemical formula HSO3F. It is one of the strongest acids commercially available. It is a tetrahedral molecule and is closely related to sulfuric acid, H2SO4, substituting a fluorine atom for one of the hydroxyl groups. It is a colourless liquid, although commercial samples are often yellow.[2]

  1. ^ a b Sigma-Aldrich Co., Fluorosulfonic acid. Retrieved on 2024-01-27.
  2. ^ Erhardt Tabel, Eberhard Zirngiebl, Joachim Maas "Fluorosulfuric Acid" in "Ullmann's Encyclopedia of Industrial Chemistry" 2005, Wiley-VCH, Weinheim. doi:10.1002/14356007.a11_431

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