Anhydrous magnesium chloride

Magnesium chloride, anhydrous, 29 Manganous chloride, anhydrous, 29 Mercuric sulfide, red, 19 Mercury, solubility of metals in, 6 Metals, solubility in mercury, 6 Monochloroamine, 59 analysis of, 62... 

Magnesium cerium(III) nitrate, 3Mg(N03)2-2Ce(N03)3-24H20, separation of praseodymium from lanthanum by, 2 57 Magnesium chloride, anhydrous, 1 29 5 154n. 6 9 Magnesium cyclopentadienide, 6 11 Magnesium rare earth nitrates,... 

Zinc chloride, anhydrous Magnesium chloride, anhydrous Iron(II) sulfate... 

Glycerine, bidistilled Potassium sulphate, anhydrous (K2SO4) Magnesium chloride, anhydrous (MgCl2) Agar-agar... 

Synonyms Magnesium chloride anhydrous Ciassification Inorganic salt Empiricai Cl2Mg Formuia MgCl2... 

Trade Names Containing Mackanate ELD Magnesium chloride anhydrous. See Magnesium chloride Magnesium cocoate... 

Alkyl halides Aryl halides Anhydrous calcium chloride anhydrous sodium, magnesium or calcium sulphate phosphorus pentoxide. 

Prepare a solution of benzyl magnesium chloride in a 2-litre three-necked flask from 24-3 g. of magnesium turnings, 600 ml. of sodium-dried ether and 126-5 g. (115 ml.) of redistilled benzyl chloride follow the experimental details given under n-Propylbenzene (Section IV,7). Cool the flask in running water or in ice water. Place a solution of 456 g. of n-butyl-p-toluenesulphonate (Section IV,198) in about twice its volume of anhydrous ether in the dropping funnel, and add it slowly with stirring, at such a rate that the ether just boils a white solid soon forms. The addition is complete after about 2 hours. Pour the reaction product... 

These reactions have been studied extensively, and many variations exist ia the use of HCl atmospheres to maximize the desired reactions. The dehydration of camaUite occurs with minimum hydrolysis, but results ia a mixed MgCl2—KCl cell feed. The use of magnesium chloride hexammoniate [24349-22-2], MgCl2 hNH, has been proposed, but is not practiced commercially. This salt readily deammoniates to anhydrous MgCl2. 

Molten anhydrous magnesium chloride is tapped from the bottom of the reactor. Iron, aluminum, and siUcon-based impurities are also converted to their chlorides, which volatili2e out of the reactor. Carbon monoxide is generated from coke, carbon dioxide, and oxygen. The magnesium chloride is sent to electrolytic cells. Russian diaphragmless cells purchased from the defunct American Magnesium Co. are used. 

Anhydrous magnesium chloride is soluble in lower alcohols. In 100 g of methanol, its solubiUty is 15.5 g at 0°C and 20.4 g at 60°C. In ethanol, the solubihty is 3.61 g at 0°C and 15.89 g at 60°C. Upon cooling, anhydrous MgCl2 forms addition compounds with alcohols of crystallization such as magnesium chloride hexamethanolate [57467-93-0]andmagnesium chloride hexaethanolate [16693-00-8]Both of these alcoholates are deflquescent. 

When magnesium oxide is chlorinated in the presence of powdered coke or coal (qv), anhydrous magnesium chloride is formed. In the production of magnesium metal, briquettes containing CaCl2, KCl, NaCl, MgO, and carbon are chlorinated at a temperature such that the electrolyte or cell melt collects at the bottom of the chlorinator, enabling the Hquid to be transferred directly to the electrolytic cells. 

A one-step, low energy process was developed by Magnesium International Corp. for producing anhydrous magnesium chloride. This process... 

A mixture consisting of 0.69 g (10.5 mmoles) of zinc-copper couple, 12 ml of dry ether, and a small crystal of iodine, is stirred with a magnetic stirrer and 2.34 g (0.7 ml, 8.75 mmoles) of methylene iodide is added. The mixture is warmed with an infrared lamp to initiate the reaction which is allowed to proceed for 30 min in a water bath at 35°. A solution of 0.97 g (2.5 mmoles) of cholest-4-en-3/ -ol in 7 ml of dry ether is added over a period of 20 min, and the mixture is stirred for an additional hr at 40°. The reaction mixture is cooled with an ice bath and diluted with a saturated solution of magnesium chloride. The supernatant is decanted from the precipitate, and the precipitate is washed twice with ether. The combined ether extracts are washed with saturated sodium chloride solution and dried over anhydrous sodium sulfate. The solvent is removed under reduced pressure and the residue is chromatographed immediately on 50 g of alumina (activity III). Elution with benzene gives 0.62 g (62%) of crystalline 4/5,5/5-methylene-5 -cholestan-3/5-ol. Recrystallization from acetone gives material of mp 94-95° Hd -10°. 

C. Active magnesium. A 200-ml., three-necked, round-bottomed flask is equipped with a Teflon-coated magnetic stirring bar, stopper, rubber septum, and condenser connected to an argon inlet (Note 6). The flask is charged with 1.5 g. (0.038 mole) of freshly cut potassium (Notes 7 and 8), 2.01 g. (0.0211 mole) of anhydrous magnesium chloride (Note 9), 3.55 g. (0.0214 mole) of anhydrous potassium iodide (Note 10), and 50 ml. of tetrahydrofu-ran (Note 11). The mixture is stirred vigorously (Note 12) and... 

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