Fluoroantimonic acid

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Fluoroantimonic acid is a mixture of hydrogen fluoride and antimony pentafluoride, containing various cations and anions (the simplest being H2F+ and SbF−6). This substance is a superacid that can be over a billion times stronger than 100% pure sulfuric acid, depending on proportion of its ingredients. It has been shown to protonate even hydrocarbons to afford pentacoordinate carbocations (carbonium ions). Extreme caution needs to be in place when handling fluoroantimonic acid. It is exceptionally corrosive, but can be stored in containers lined with PTFE (Teflon).

Source: https://en.wikipedia.org/wiki/Fluoroantimonic_acid
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Tags:
112Trichloro122trifluoroethane
Acid
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