Aluminum sodium fluoride

Aluminum Industry. Large amounts of HE are consumed in the production of aluminum fluoride [7784-18-17, AIE, and cryoHte [15096-52-3] (sodium aluminum fluoride), used by the aluminum industry. Both of these compounds are used in the fused alumina bath from which... 

The primar> uses for hydrogen fluoride in the United States arc in the manufacture of chlorofluorocarbons, aluminum fluoride, sodium aluminum fluoride (ciyolitc). md uranium tetrafluoride, and in petroleum alkylation. 

Sodium beryllium fluoride (Na2BeF4) is water-soluble and sodium aluminum fluoride (Na,AlF6) is water-insoluble. A part of the silicon volatilizes off as silicon tetrafluoride (SiF4), while the other part remains in the residue as silicon dioxide (Si02). Fluorination of silicon is unnecessary and it would be economical to recover all of it as silica. This is accomplished by using soda ash, i.e., sodium carbonate (Na2C03) in the reaction mixture ... 

The formation of sodium aluminum fluoride can also be avoided by the use of soda ash. The pertinent reaction is... 

There are many fluorocomplexes of aluminum. The general formula for the fluoroaluminates is M I, I, a I- based upon A1F6 octohedra. which may share comers to give other ratios of A1 F than 1 6. Chloroaluminates of the type M lAlClj] are obtainable from fused melts. Aluminum ions form chloro-, bromo-, and iodo-complexes containing tetrahedral IALX41 ions. However, in sodium aluminum fluoride NaAlF4, the aluminum atoms are in the centers of octohedra of fluorine atoms in which the fluorine atoms are shared with neighboring aluminum atoms. 

Hydrogen fluoride is used to prepare fluorocarbons and one-third of the total goes to the aluminum industry, where synthetic cryolite, sodium aluminum fluoride, is a major constituent of the electrolyte. It is also consumed in the melting and refining of secondary aluminum. Other uses of hydrofluoric acid are found in the metals and petroleum industries. 

Other ingredients that may be found in smokeless powders include camphor, carbazole, cresol, diethyleneglycoldinitrate (DEGDN), dimethylse-bacate, dinitrocresol, di-normal-propyl adipate, 2.4-dinitrodiphenylamine, PETN, TNT, RDX, acaroid resin, gum arabic, synthetic resins, aluminum, ammonium chlorate/oxalate/perchlorate, pentaerythritol dioleate, oxamide, lead carbonate/salicylate/stearate, magnesium oxide, sodium aluminum fluoride, sodium carbonate/bicarbonate, petrolatum, dioctylphthalate, stannic oxide, potassium cyrolate, triphenyl bismuth. 

CRYOLITE ENT 24,984 KRYOLITH (GERMAN) NATRIUMALUMINUMFLUORID (GERiMAN) NATRIUMHEXAFLUOROALUMINATE (GERMAN) SODIUM ALUMINOFLUORIDE SODIUM ALUMINUM FLUORIDE SODIUM HEXAFLUOROALUMINATE VILLIAUMITE... 

Hall process— A process for the production of aluminum metal by passing an electric current through a mixture of aluminum oxide dissolved in cryolite (sodium aluminum fluoride). 

A number of chemists realized how important it was to find a less expensive way to prepare aluminum. In 1883, Russian chemist V. A. Tyurin found a less expensive way to produce pure aluminum. He passed an electric current through a molten (melted) mixture of cryolite and sodium chloride (ordinary table salt). Cryolite is sodium aluminum fluoride (Na3AlF< ). Over the next few years, similar methods for isolating aluminum were developed by other chemists in Europe. 

Fluorine never occurs as a free element in nature. The most common fluorine minerals are fluorspar, fluorapatite, and cryolite. Apatite is a complex mineral containing primarily calcium, phosphorus, and oxygen, usually with fluorine. Cryolite is also known as Greenland spar. (The country of Greenland is the only commercial source of this mineral.) It consists primarily of sodium aluminum fluoride (Na3ALF6). The major sources of fluorspar are China, Mexico, Mongolia, and South Africa. In 2008 in the United States, fluorspar was produced as a by-product of limestone quarrying in Illinois. The United States imports most of the fluorspar it needs from China and Mexico. 

The third commercial process for production of polysilicon was developed by the Ethyl Corporation. In this case, the raw material is not MG silicon but silicon fluoride, a waste product from fertilizer manufacture, which is reacted with lithium aluminum hydride or sodium aluminum hydride, with saleable byproduct of lithium aluminum fluoride or sodium aluminum fluoride,... 

Sodium aluminum fluoride 968 Sodium cyclohexy amidosulphate 3409... 

Sodium aluminum fluoride (as F) Formula NasAIFe CAS 15096-52-3 RTECS WA9625000 IDLH 250 mg/m (as F)... 

Sodium fluoroaluminate CAS 15096-52-3 EINECS/ELINCS 215-560-3 Synonyms Aluminum sodium fluoride Cryolite Sodium aluminofluoride Sodium aluminum fluoride Sodium aluminum hexafluoride Sodium fluoaluminate Sodium hexafluoroaluminate... 

Sodium acetate Sodium aluminate Sodium aluminum fluoride Sodium aluminum sulfate Sodium arsenate... 

Electrometallurgy. A major application of electrochemical principles and techniques occurs in the manufecture of such metals as aluminum and titanium. Plentiful aluminum-containing bauxite ores exist in lai e deposits in several countries, but it yms not until electrochemical techniques were developed in the United States and France at the end of the nineteenth century that the cost of manufecturing this light metal was sufficiently reduced to make it a commercially valuable commodity. This commercial process involved the electrolysis of alumina (aluminum oxide) dissolved in fused cryolite (sodium aluminum fluoride). During the century that followed this process s discovery, many different uses for this lightweight metal ensued, from airplanes to zeppehns. 

Ammonium dichromate Ammonium molybdate Ammonium nitrate Ammonium sulfate Barium carbonate Barium chloride Barium nitrate Borax Boric acid Caldum oxide Chromium trioxide Citric acid Potassium thiocyanate Sodium acetate Sodium aluminum fluoride Sodium bicarbonate Sodium chlorate Sodium chloride Sodium nitrate Sodium sulfate Triphenyl phosphate Ammonium chloride Ammonium fluoride Copper sulfate Magnesium chloride Oxalic acid Aluminum chloride Calcium chloride Ferric chloride Potassium permanganate Sodium carbonate Sodium fluoride... 

CRYOLITE. (SODIUM ALUMINUM FLUORIDE). Alloy 3003 was resistant to solid cryolite in laboratory tests conducted under conditions of 100% relative humidity at ambient temperature. See also Ref (7)pp. 160, 161. 

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