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Fluoroantimonic acid is a mixture of hydrogen fluoride and antimony pentafluoride, containing various cations and anions (the simplest being H 2 F + and Sb F − 6).This mixture is a superacid that, in terms of corrosiveness, is trillions of times stronger than pure sulfuric acid when measured by its Hammett acidity function.
As fluoroantimonic acid is often mixed in a 1:1 ratio, [Sb 2 F 11] − is the dominant anion in the solution. Further, solvated protons are not limited to [H 2 F] +, and can form heavier cations such as [H 3 F 2] + or [H 4 F 3] +, leaving more SbF 5 to react and form higher fluoroantimonate ions.
For example, fluoroantimonic acid, nominally (H 2 FSbF 6), can produce solutions with a H 0 lower than –28, giving it a protonating ability over a billion times greater than 100% sulfuric acid. [5] [6] Fluoroantimonic acid is made by dissolving antimony pentafluoride (SbF 5) in anhydrous hydrogen fluoride (HF).
In April of 2024, the U.S. Environmental Protection Agency labeled a highly persistent PFAS known as perfluorooctane sulfonic acid (PFOS) and its salts and structural isomers as hazardous substances.
Antimony pentafluoride is the inorganic compound with the formula Sb F 5.This colourless, viscous liquid is a strong Lewis acid and a component of the superacid fluoroantimonic acid, formed upon mixing liquid HF with liquid SbF 5 in 1:1 ratio.
Research has found that using a mix of water—along with fruit and vegetable sanitizers that contain peroxyacetic acid and hydrogen peroxide—can help reduce levels of norovirus and hepatitis A ...
Fluorine is a principal component of the strongest known charge-neutral acid, fluoroantimonic acid (H 2 FSbF 6). [30] There is evidence for an even stronger acid called fluoroauric acid (H 2 FAuF 6) but it has not proved isolable. [31] In a molecule that is composed of a central atoms and fluorines attached to it, the intermolecular bonding is ...
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