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Fluorine is a chemical element; it has symbol F and atomic number 9. It is the lightest halogen [note 1] and exists at standard conditions as pale yellow diatomic gas. Fluorine is extremely reactive as it reacts with all other elements except for the light inert gases. It is highly toxic.
One third of HF (one sixth of mined fluorine) is used to make synthetic cryolite (sodium hexafluoroaluminate) and aluminium trifluoride. These compounds are used in the electrolysis of aluminium by the Hall–Héroult process. About 23 kg (51 lb) are required for every metric ton of aluminium. These compounds are also used as a flux for glass. [5]
Perfluorocarbons (PFCs) are the compounds consisting of fluorine and carbon. They are widely used in the electronics, cosmetics, and pharmaceutical industries, as well as in refrigeration when combined with other gases. PFCs were commonly used as fire extinguishants in the past and are still found in older fire protection systems.
Fluorine's chemistry is dominated by its strong tendency to gain an electron. It is the most electronegative element and elemental fluorine is a strong oxidant. The removal of an electron from a fluorine atom requires so much energy that no known reagents are known to oxidize fluorine to any positive oxidation state. [20]
Although the brands were not named, “fifteen of the 22 bands we tested had a high percentage of total fluorine concentrations, and nine contained [perfluorohexanoic acid] PFHxA,” Alyssa Wicks ...
“Fluorine gas is put into a plastic container, and the fluorine reacts with the surface to make it more stable,” he said. ... USA TODAY. Kim Kardashian posted a photo of Melania Trump at the ...
Man-made fluoride compounds are common and are used in medicines, pesticides, and materials. Twenty percent of all commercialized pharmaceuticals contain fluorine, including Lipitor and Prozac. [1] [2] In many contexts, fluorine-containing compounds are harmless or even beneficial to living organisms; in others, they are toxic.
The researchers discovered that all of the 13 bands that advertised that they were made from fluoroelastomers contained fluorine, which indicates the potential presence of PFAS. Two of the nine ...