Fluorine Hydrogen fluoride

The reagents useful for the fluorination of ores and compounds include flurosilicates, elemental fluorine, hydrogen fluoride, and alkali hydrogen fluorides. Their use is illustrated for fluorination of oxides and oxidic minerals. 

The actual fluoride-forming reaction in the ammonium bifluoride route is hydro-fluorination. Hydrogen fluoride, which is present in chemical combination in the bifluoride, is readily released on heating. Bifluorides are easier to handle than hydrogen fluoride. The particular advantage of ammonium bifluoride over other alkali hydrogen fluorides is that it is volatile, and thus can be readily distilled out from the reaction mixture. 

PESs for fluorine, hydrogen fluoride, and water using this ansatz showed promise [14]. In all cases the perturbative approach improved the accuracy considerably at a small increase of computational cost. Especially interesting is the possibility of linear scaling. 

See Fluorine Hydrogen fluoride, Seleninyl fluoride See other INORGANIC ACIDS See related NON-METAL HALIDES... 

Spears, L. G., Hackerman, N. Analysis of fluorine, hydrogen fluoride, nitrogen trifluoride, trans dinitrogen difluoride and dinitrogen tetrafluoride mixture by gas chromatography. J. Gas Chromatog. 6, 392 (1968). 

Agency for Toxic Substances and Disease Registry (ATSDR). 2003. Toxicological profile for fluorine, hydrogen fluoride, and fluorides (updated 2007). Atlanta, GA U.S. Department of Health and Human Services, Public Health Service. 

When warmed above 100° tetracarbon monofluoride preparations begin to decompose and when rapidly heated they deflagrate—sometimes with flame—and leave a very finely divided soot. Decomposition also occurs when the compound is gradually heated to 200-300° in a stream of fluorine or of a fluorine-hydrogen fluoride mixture. Thus it is not possible to convert the compound to carbon monofluoride by further fluo-rination. 

Related Chemicals Fluorine, hydrogen fluoride and fluorides... 

Fluorine, hydrogen fluoride, and fluorides are chemically related. Fluorine is a naturally occurring, pale yellow-green gas with a sharp odor. It combines with hydrogen to make hydrogen fluoride, a colorless gas. Hydrogen fluoride dissolves in water to form hydrofluoric acid. Fluorine also combines with metals to make fluorides such as sodium fluoride and calcium fluoride, both white solids. Sodium fluoride dissolves easily in water, but calcium fluoride does not. 

How can families reduce the risk of exposure to fluorine, hydrogen fluoride, and fluorides ... 

Aliphaic amines, alkaline earth chlorides, alkaline earth hydroxides, fluorine, hydrogene fluoride and hydrofluoric acid, hydrochloric acid and hydrogen chloride (1989),... 

Contact time very much controls the degree of conversion of polychlorinated pyrimidines heated in sealed tubes with solid potassium fluoride (Entry 6) [66], and selectivity can also be achieved by careful control of reaction conditions and reagents. With 2,4,5-trichloropyrimidines, substituted at C-6 by chloro, methyl, chloromethyl, di- or tri-chloromethyl, sodium or potassium fluoride use only resulted in nuclear fluorination. Hydrogen fluoride can displace chlorines on either side chain or nucleus (especially 2-chloro), and antimony fluoride is specific for all chlorinated methyl groups. Sodium fluoride initially replaces a 4-chloro group [67]. Fluorination reactions on tetrachloropyridazine using sodium fluoride and potassium... 

Hauffe K., Corrosion Handbook, Fluorine, hydrogen fluoride, hydrofluoric acide, Vol. 1, Dechema, 1989, p. 106. 

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