Arsenious chloride

Using the scale in which hydrogen is zero, the electrode potential of arsenic in contact with normal arsenious chloride is -0-27 volt.8 Using an electrode formed by plating arsenic on copper, Marquis 7 made a series of potential measurements in an alcoholic solution of arsenious chloride and from his results concluded that arsenic should be placed between hydrogen and copper in the electromotive series the nature of the electrolyte used, however, influences the relative positions of... 

The Raman spectra of arsenious chloride,2 in the liquid and gaseous states, of light and heavy arsine3 and of sodium arsenite and sodium arsenate,4 have been examined and frequencies obtained. The Raman spectra of the chloride and bromide in solution in ether or benzene consist of the spectra of the pure solute and pure solvent only, indicating that chemical combination does not occur in the solution.6 With solutions in methyl and ethyl alcohols, the frequencies of the latter are unchanged, but those of arsenious chloride are lowered somewhat.6... 

Arsenious oxide appears to undergo no change when heated in gaseous ammonia 9 it is insoluble in liquid ammonia,10 but dissolves readily in hot aqueous ammonia. Heated with solid ammonium chloride, arsenious chloride and ammonia are produced.11 With nitrogen iodide the following reaction occurs 12... 

When arsenic trisulphide is exposed to dry hydrogen chloride or hydrogen bromide, it liquefies at the ordinary temperature and on heating complete volatilisation occurs.9 It is not readily attacked by halogen acids. When boiled with concentrated hydrochloric acid it is decomposed, but with great difficulty, and the hydrogen sulphide and arsenious chloride evolved reproduce arsenious sulphide in the receiver.10 A similar reaction occurs when heated with a chloride in the presence of concentrated sulphuric acid, but the decomposition is incomplete.11 The reaction is facilitated by the presence of cuprous chloride or ferric chloride. Only a slight reaction is observed with dilute acid,12 and the... 

Application of liquid arsenious chloride to the skin also causes acute poisoning. The immediate result is necrosis this may be considerably retarded by washing within one minute of the application, but after five minutes washing has no effect.1 The arsenic is rapidly absorbed by the tissues, and after a few hours, if death ensues, the element can be recovered from most of the tissues and organs of the body, especially the brain, liver and kidneys. 

Arsenic Trichloride(Arsenious Chloride), AsC13 mw 181.28, col oily liq, fr p -18°, bp 130.2°, d 2.16 at 25°, vap pres 10mm at 24° sol in w, ale, eth or oils. It is formed when arsenic burns in chlorine, or by distilling a mixt of As trioxide with HC1, or by heating As203 with sulfur chloride in a current of chlorine. It is used in ceramics, in the prepn of pharmaceuticals, and in the prepn of chloro defivs of arsine (qv) or chemical warfare agents (CWA s)(qv). See Vol 1, p A491... 

SYNS ARSENIC BUTTER ARSENIC(III) CHLORIDE . ARSENIOUS CHLORIDE ARSENOUS CHLORIDE Q ARSENOUS TRICHLORIDE (9CI) CHLORURE d. ARSENIC (FRENCH) CHLORURE ARSENIEUX (FRENCH) FUMING LIQUID ARSENIC TRICHLOROARSINE TRICHLORURE d ARSENIC (FRENCH)... 

ARSENIOUS ACID, STRONTIUM SALT see SME500 ARSENIOUS ACID, TRISILVER(I-h) SALT see SDMIOO ARSENIOUS ACID, ZINC SALT (9CI) see ZDSOOO ARSENIOUS CHLORIDE see ARF500 ARSENIOUS OXIDE see ARI750 ARSENIOUS SULPHIDE see ARIOOO ARSENIOUS TRIOXIDE see ARI750 ARSENITE see ARI750... 

Dialkylarsincs are caused to interact with chk rinuting agents, such as sulphur or arsenie chlorides or ethylchlomformatc. 

This arsine is prepared by the Fittig reaction, using bromo- ert.-butyl-benzene, arsenious chloride, and sodium, heated together in ether solution. It melts at 235° C., is readily soluble in benzene, chloroform, and carbon tetrachloride, but sparingly soluble in alcohol and ether. 

Bromopsewdocumene (50 grams), 16 grams of arsenious chloride, and 21 grams of sodium in 250 c.c. of ether are heated for a prolonged period after the initial reaction ceases. The product, when worked up in the usual manner, crystallises in snow-white needles, M.pt. 228° C., very soluble in warm benzene, sparingly soluble in alcohol and light petroleum, insoluble in ether. 

The method of preparation is similar to that of the preceding compounds, 80 grams of bromoraesitylene, 9 grams of arsenious chloride, and 20 grams of sodium in dry ether being heated under reflux. It crystallises from alcohol in prismatic needles, M.pt. 170° C., readily soluble in ether, chloroform, and light petroleum, less soluble in alcohol and acetic acid. 

Matsomiya, Mem. CoU. 8ci., Kyoto, 1920, 4, 217. If the Qiignard reagent is added to the arsenious chloride, the resulting product is di.a-naphthylchloroarsine. 

Triphenylarsine and arsenious chloride are heated in a sealed tube at 250° C., or at ordinary pressures, using a high temperature. ... 

Using phenylmercuric chloride. Thirty grams of this compound and 100 grams of arsenious chloride are heated together on the water-bath for four to five hours. The product is then filtered off and the filtrate distilled in vacuo, excess or arsenious chloride being removed by first distilling at 100° C. ... 

Ten grams of tricumylarsine and 40 grams of arsenious chloride are heated for forty-eight hours at 170° C., the yield of chloride being about 6 grams. It distils at 170° C. at 30 mm. and does not solidify. 

Tri-pamiocumylarsine (5 grams) and 20 grams of arsenious chloride ar.e heated for forty-eight hours at 200° C. in a sealed tube, and the resulting product fractionated at 30 mm., the chloride distilling over at 190° C. It crystallises in small, white needles, M.pt. 82-5° C. 

This chloride may be prepared either from mercury di-a-naphthyl and arsenious chloride, or by heating one part of tri-a-naphthylarsine with 20 parts of arsenious chloride at 270° C. for forty hours. The excess of arsenious chloride is removed under reduced pressure and the residue extracted with ether, a grey mass being left when the solvent is distilled off. This, when recrystalhsed from alcohol or petroleum ether, yields a pure white product, M.pt. 63° C. A more recent investigation gives M.pt. 68° C., and B.pt. 180° C. at 5 mm. ... 

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