Arsenic chloride mixed

Arsenic. — On mixing 1 cc. of glycerin with 3 cc. of stannous chloride solution, the mixture should not darken within one hour. 

Colloidal manganese arsenate may be obtained in an analogous way to that described for cadmium and cobalt arsenates.7 If concentrated solutions of manganous chloride and potassium dihydrogen arsenate are mixed at the ordinary temperature, a solid jelly is formed, which remains stable for weeks but finally, rose-coloured crystals separate and the jelly partly liquefies.8 The essential constituent of the jelly appears to be the monohydrogen arsenate, MnHAs04, and the crystals are the monohydrate, MnHAs04.Ha0. 

Because of its high vapour tension as well as its low density it is difficult to maintain a high concentration of hydrocyanic acid in an open place. As the toxic action is considerably reduced by dilution, numerous artifices were used during the war to render this gas more persistent. Lebeau, in France, suggested mixing it with the smoke-producing chlorides, as stannic, titanium or arsenic chloride. The result was that the already low stability of the hydrocyanic acid was still further reduced. Then it was proposed to add a proportion of chloroform to the mixture, this forming the mixture termed " Vincennite by the French. It consisted of 50% hydrocyanic acid, 30% arsenic trichloride, 15% stannic chloride and 5% chloroform. 

Later, various other compounds were prepared and examined for possible emplo5nnent as war gases. These are similar in constitution to the chlorovinyl arsines and are prepared similarly jS Bromovinyl dibromoarsine (b.p. 140° to 143° C. at 16 mm. mercury pressure) was prepared by Lewis and Stiegler by the action of acetylene on arsenic bromide mixed with aluminium chloride ... 

Arsenic/antimony solution. Prepare a mixed solution containing approximately 115 mg arsenic and 160 mg antimony in 1 L by dissolving about 150 mg arsenic(III) oxide and 300 mg antimony(III) chloride in 6M hydrochloric acid. 

During World War I, pulmonary agents were sometimes mixed with various metal chlorides to produce a visible cloud. Agents were also sometimes mixed with arsenical vesicants (Agent Index C04) to increase their lethality. 

E. D.onath prepared a cone. aq. soln. by distilling ammonium chloride with a hot soln. of sodium sulphide until half the liquid has passed to the receiver. E. W. Parnell and J. Simpson patented a process for making ammonium sulphide by heating the mixed residues of the Leblanc and ammonia-soda processes they also used calcium or barium sulphide instead of the Leblanc residue. Ammonium carbonate with calcium or barium sulphide can also be used (NH COj-l-BaS =BaC03-t-(NH4)2S. According to J. Habermann, ammonium sulphide free from arsenic can be obtained only by using materials free from that element. 

Arsenic. On dissolving 1 gin. of UDliinniiy Irioxide in d e.c.. uf hydmehlnric acid (sp. nr. I.l dl. mid adding ec. of slam inns chloride solution, lln- mix lire should net darken with hi une hour. 

This reaction does not proceed in carbon tetrachloride solution.10 Retgers 11 stated that the solid hydride resulted when arsine was heated or when the flame of arsine impinged on a cold plate but other observers 12 maintain that arsenic alone is produced. A solid hydrogen-containing product has also been obtained by the action of zinc, in the presence of sulphuric and nitric acids, on arsenious oxide,13 and by the action of arsine on solid potassium hydroxide,14 followed by the addition of water. A good yield (up to 98 per cent.) of the hydride in a comparatively pure state may be obtained by mixing an ether solution of stannous chloride with a solution of arsenic trichloride in dilute hydrochloric acid.15 The reaction is ... 

The gas reacts vigorously with the halogens. When mixed with chlorine a flame is produced and arsenic and hydrogen chloride are formed 12 with excess of chlorine arsenic trichloride is produced, and in the presence of water arsenious and arsenic acids result. Bromine13 reacts similarly, the oxidation in the presence of water to arsenic acid being quantitative.14 With liquid chlorine, arsine reacts at temperatures as low as -140° C., forming reddish products, apparently containing... 

Arsenic triiodide also dissolves, the saturated solution at 15° C. having density 3-661. Other soluble halides are potassium bromide, anhydrous ferric and aluminium chlorides 6 and tetramethyl ammonium iodide but the iodides of rubidium, cadmium, manganese and cobalt, also mercuric and stannic iodides, and cobalt and stannic bromides, are insoluble or only very slightly soluble in arsenic tribromide. The liquid also dissolves phosphoryl bromide and, very slightly, ammonium thiocyanate. In the mixed solutions of halides, the components may react chemically (cf. p. 106), but such is not always the case for example, with antimony tribromide a continuous series of solid solutions is formed.7... 

A solution of 7g of arsenic trioxide in 100ml of concentrated hydrochloric acid is mixed with a solution of 35g of potassium iodide in 35ml of water, After standing for 5 minutes tile orange precipitate of product Is filtered off, drained thoroughly, and dried in vacuo over solid alkali. The product is freed from adhering potassium chloride hy... 

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