Fluoroantimonic acid

Fluoroantimonic acid
	Fluoroantimonic acid stored in a PFA bottle
Names
	IUPAC name Fluoroantimonic acid
	Systematic IUPAC name Hexafluoroantimonic acid
	Other names Fluoroantimonic(V) acid; Hydrogen Fluoroantimonate; Hydrogen Hexafluoroantimonate; Fluoronium Fluoroantimonate; Fluoronium Hexafluoroantimonate;
Identifiers
CAS Number	16950-06-4 (HSbF6) ;
3D model (JSmol)	Interactive image;
ChemSpider	32741664 ;
ECHA InfoCard	100.037.279
EC Number	241-023-8;
PubChem CID	11118066 wrong formula;
CompTox Dashboard (EPA)	DTXSID10894750 ;
	InChI InChI=1S/FH2.6FH.Sb/h1H2;6*1H;/q+1;;;;;;;+5/p-6 Key: HBGBSIVYTBPVEU-UHFFFAOYSA-H ;
	SMILES [FH2+].F[Sb-](F)(F)(F)(F)F;
Properties
Molar mass	236.756 g/mol
Appearance	Colorless liquid
Density	2.885 g/cm3
Boiling point	40 °C (104 °F; 313 K) (decomposes)
Solubility in water	Reacts with water
Solubility in sulfuryl chloride fluoride	soluble
Solubility in sulfur dioxide	soluble
Vapor pressure	19 hPa (18 °C (64 °F; 291 K))
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Extremely corrosive, toxic, reacts violently with water.
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300+H310+H330, H314, H411
Precautionary statements	P260, P262, P264, P270, P271, P273, P280, P284, P301+P310+P330, P301+P330+P331, P302+P350, P303+P361+P353, P304+P340+P310, P305+P351+P338+P310, P362, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	4 0 4 W; OX
Threshold limit value (TLV)	0.5 mg/m3 (TWA)
	NIOSH (US health exposure limits):
PEL (Permissible)	0.5 mg/m3
REL (Recommended)	0.5 mg/m3 (TWA)
Related compounds
Related acids	Antimony pentafluoride; Hydrogen fluoride; Magic acid;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Fluoroantimonic acid is a mixture of hydrogen fluoride and antimony pentafluoride, containing various cations and anions, the simplest being fluoronium (H₂F⁺) and fluoroantimonate (SbF−6). The mixture is the strongest known superacid, stronger than pure sulfuric acid by many orders of magnitude, according to its Hammett acidity function. It even protonates some hydrocarbons to afford pentacoordinate carbocations (carbonium ions). Like its precursor hydrogen fluoride, it attacks glass, but can be stored in containers lined with PTFE (Teflon) or PFA.