Manganous chloride

The reaction is cataly2ed by all but the weakest acids. In the dehydration of ethanol over heterogeneous catalysts, such as alumina (342—346), ether is the main product below 260°C at higher temperatures both ether and ethylene are produced. Other catalysts used include siUca—alumina (347,348), copper sulfate, tin chloride, manganous chloride, aluminum chloride, chrome alum, and chromium sulfate (349,350). 

Mangani-. manganic, -chlorid, n. manganic chloride, manganese (III) chloride, -cyan-wasserstoffs ure, /. manganicyanic acid, cyanonianganic(III) acid. 

A crystalline salt or powdered metal oxide such as manganous chloride or manganese dioxide. This kind of ingredient is blended... 

Polissar has observed 100 % exchange between Mn(III), as the oxalato ion Mn(Ox)J, and manganous sulphate. Adamson, using manganic chloride as the source of Mn(III), has observed the exchange to be incomplete in a time 15 sec with reactant concentrations 10 M. Both workers used a separation technique based on the precipitation of Mn(IV), present via the equilibrium... 

Compounds Manganese dioxide manganese tetroxide manganous chloride manganous sulfate... 

Formula MnCb MW 125.84 forms a stable tetrahydrate, MnCl2 4H20 Synonyms manganous chloride manganese dichloride scacchite... 

Ammino - manganous Chlorides.—The anhydrous chloride absorbs ammonia gas rapidly at low temperature with formation of hexammino-manganous chloride, [Mn(NH3)6]Cl2, a pure white body which, on thermal decomposition, loses ammonia and is converted into the diammine, [Mn(NH8)2]Cl.2. There is also evidence of the existence of a monammine.2 All three substances are unstable and decompose on contact with water.3... 

Dihydroxylamino-manganous Chloride, [Mn(NH3OH),]Cl2, may be formed by treating a hot aqueous solution of manganous chloride with hydroxylamine hydrochloride and adding a further quantity of the base in alcohol. On cooling the liquid crystals separate. The substance is white and very stable, only beginning to decompose at 150° C.5... 

Dipyridino-manganous Chloride, [Mn(C5H5X)2]Cl3, appears to exist in two forms, one rose-coloured, the other brown. The rose-coloured variety is obtained from the manganic derivative described above by pressing it between filter-paper for several days, or it may be precipitated from a solution of manganous chloride in absolute alcohol by excess of pyridine. It may also be produced by recrystallising the brown compound from absoluet alcohol. The conductivity is the same for both forms. The brown modification is prepared from a concentrated solution of the chloride mixed with excess of pyridine. The solution turns brown and a solid is precipitated. In the dry state... 

The corresponding diquinolino-chloride, [Mn(C8H7N).2]Cl2, is also known, as also dianili no-manganous chloride, [5ln(C6H6NH2)2]Cl2.a... 

Trihydroxylamino-manganous Carbonate, [Mn(NH20H)3]C03. 2HaO, is produced as a white or grey powder when a solution of sodium carbonate and hydroxyl amine hydrochloride is added to an aqueous solution of manganous chloride.9... 

Manganous chloride (4H2O) [13446-34-9] M 197.9. Crystd from water (0.3ml/g) by cooling. 

Sulphates. Dissolve I gm. of manganous chloride in 10 cc. of water, add 0.2.r> cc, of hydrochloric acid, and some barium chloride solution. No change should be noticeable,... 

Chlorine. The solution of 1 gm. of manganous chloride in d() ee. of water and f> cc. of l(i per cent sulphuric acid should not he immediately rendered blue by zinc, iodide-starch solution. 

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