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Fluoroantimonic Acid Properties

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Fluoroantimonic Acid

Molecule 3D Structure Image

Molecule Structure Image

Description
Fluoroantimonic acid is a mixture of hydrogen fluoride and antimony pentafluoride in various ratios. The 1:1 combination forms the strongest known superacid, which has been demonstrated to protonate even hydrocarbons to afford carbocations and H₂.

Chemical Properties

Acidity	-25
Appearance	Colourless Liquid
Basicity	39
CAS Number	16950-06-4
Class	8
Density	2.885 g/ml
EINECS Number	241-023-8
IUPAC Name	Hexafluoroantimony; hydron
InChI	1S/6FH.Sb/h6*1H;/q;;;;;;+5/p-5
InChIKey	MBAKFIZHTUAVJN-UHFFFAOYSA-I
Melting Point	20°C
Molar Mass	236.76 g/mol
Molecular Formula	SbHF₆
NFPA 704	H-4,F-0,R-3,C-W
PG	2
Synonyms	Antimonate(1-),Hexafluoro-, Hydrogen, (OC-6-11)-;Antimonate(1-),Hexafluoro-, Hydrogen;Fluoroantimonic(V) Acid;Hydrogen Hexafluoroantimonate(V);Fluoroantimonic Acid;Hexafluoroantimonic Acid;Hexafluorostibonic Acid;Hydrogen Hexafluoroantimonate;Hydrogenhexafluoroantimonate(1-);Monohydrogen Hexafluoroantimonate

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