Magnesium and Ammonium Chloride

Phosphates and Arsenates. Dissolve 5 gin. of magnesium and ammonium chloride in 10 ee. of water, and add 5 cc. of ammonia water. No turbidity or precipitate should form within twelve hours. 

Sorption of metal ions such as Ca, Mg, Al, Cu, Fe, Ni, Co, Cd, Zn, Pb, Hg, and Cr on silica gel impregnated with a mixture of Aliquat 336 and Titan Yellow was investigated in the pH range 1-9. The column extraction chromatography application of the sorbent to the separation of solutions of analytical reagent grade sodium, potassium, calcium, magnesium, and ammonium chloride from traces of Cu, Pb, Cd, and Zn, and the separation of some metal ion mixtures were also reported. " ... 

Magnesium is slowly precipitated as the white magnesium ammonium tetraoxophosphate(V). MgNH4P04.6H20. when a solution of disodium hydrogentetraoxophosphate(V) is added to a solution of a magnesium salt in the presence of ammonia and ammonium chloride. 

Compounds related to aniline, either directly or by oxidation, and to nitrobenzene by reduction, are numerous and important. When nitrobenzene is reduced in the presence of hydrochloric acid by tin or iron, the product is aniline (colorless liquid in die presence of water by zinc, the product is phenylhydroxylamine (white solid) in the presence of methyl alcohol by sodium alcoholate 01 by magnesium plus ammonium chloride solution, the product is azoxybenzene (pale yellow solid) by sodium stannitc, or by water plus sodium amalgam, the product is azobcnzcnc (red solid) in the presence of sodium hydroxide solution by zinc, the product is hydrazobenzene (pale yellow solid). The behavior of other nitrocompounds is similar to that of nitrobenzene. 

For various types of catalyst there are results of kinetic investigations for the oxidative dehydrogenation of ethane available (e.g., for a magnesium oxide catalyst doped with samarium oxide, lithium nitrate and ammonium chloride [64] or a V2O5/Y-AI2O3 catalyst [68]). In another study with a Sn.oLai.oNdi.oOx catalyst, investigations were reported of noncatalytic reactions, which were found to be significant at temperatures above 700 °C [69]. 

Salts Compounds formed by the union of acids and bases, by the action of alkalies upon metals, or by the direct union of elements. The term is often incorporated in the common name of salts used as pharmaceuticals bitter salts, epsom salt, or Seidlitz salt (magnesium sulfate), preparing salt (sodium stannate), Preston s salts (ammonium chloride), Rochelle salt or Seignette s salt (potassium and ammonium tartrate), salt of Mars (ferrous sulfate), salt of Saturn (lead acetate), salt of tartar (potassium carbonate), salt of tin (stannous chloride), salt of wisdom (mercury bichloride and ammonium chloride), sore-throat salt (fused potassium nitrate), vinegar salts (calcium acetate), and vomiting salt (zinc sulfate). The term is also applied to some acids, such as salt of lemon or sour salt (citric acid), salt of sorrel (oxalic acid), and spirit of salt (muriatic acid). ... 

For hydrolysis, ethyl benzoylacetoacetate (58.5 g) is added to a mixture of concentrated ammonia solution (10 ml) and ammonium chloride (32 g) in water (150 ml) at 40°. After being kept at 40° for 10 min, this mixture is rapidly cooled and extracted with ether (100 ml). The ethereal solution is dried over anhydrous magnesium sulfate, the ether is removed, and the residue is distilled in a vacuum, giving ethyl benzoylacetate (37.5 g, 78.1%), b.p. 165— 169720 mm. 

Kilimann, M.W. Heilmeyer, L.M.G. Multiple activities on phosphorylase kinase. 1. Characterization of three partial activities by their response to calcium ion, magnesium ion, pH, and ammonium chloride and effect of activation by phosphorylation and proteolysis. Biochemistry, 21, 1727-1734 (1982)... 

In the presence of chlorides, the environment may be aggressive if the R. H. remains above 50 % (or even 40 % if the chloride content is very high and hygroscopic chlorides such as magnesium or ammonium chloride are present). Aggressiveness increases with humidity (until it reaches a maximum at R. H. of about 90-95 % for dense concrete and 95-98% for more porous concrete), with chloride content and with temperature. 

Several studies have been done on the reactive crystallization of magnesium hydroxide. Murotani et al.(l) precipitated magnesium hydroxide by adding ammonia to mixed solution of magnesium chloride and ammonium chloride. In this reaction system hexagonal crystals of magnesium hydroxide were obtained... 

As it can be concluded from the experimental aforementioned data, in the corrosion of pastes in the chloride solutions the physieal transformations and ehemical reaetions are included. The eations bonding the ehloride ions have a great impact on the eorrosion process. The most rapid eonerete destmction oeeurs in the presence of magnesium and ammonium eations. 

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