Ethyl sulphite

Ethyl n-propylmalonate, 486 Ethyl n-propyl ketone, 340 4-Ethylpyridine, 844 Ethyl 2-pyridylacetate, 931, 932 Ethyl salicylate, 783 Ethyl sulphite, 304 Ethyl -valerate, 382, 389 Ethyl vinylacetate, 382, 389 Ethylenediamine-adipic acid polymer, 1019,1025 Ethylene glycol, 285 Ethylene glycol, monoalkyl ethers of, 170, 444... 

CHLOROETHYL-P -(p-tert-BUTYLPHENOXY)-a -METHYLETHYL SULFITE P-CHLOROETHYL-P-(p-tert-BUTYLPHENOXY)-a-METHYLETHYL SULPHITE 2-CHLOROETHYL l-METHYL-2-(p-tert-BUTYL-PHENOXY)ETHYL SULPHITE 2-CHLOROETHYL SULFUROUS ACID-2-(4-(l,1-DIMETHYLETHYL-)PHENOXY)-l-METHYLETHYL ESTER 2-CHLORO-ETHYL SULPHITE of l-(p-tert-BUTYLPHENOXY)-2-PROPANOL COMPOUND 88R ENT 16,519 NIAGARAMITE ORTHO-MITE 88-R... 

CHLOROETHYL l-METHYL-2-(p-tert-BUTYLPHENOXY)ETHYL SULPHITE see SOP500 l-(2-CHLOROETHYL)-3-(4-METHYLCYCLOHEXYL)-l-NTTROSOUREA see CHD250... 

The esters of a number of inorganic acids are known. Those derived from the strong acids may be prepared directly from the acid and alcohol. In the case of the weak acids the esters can be prepared as the result of the interaction of the silver salt of the acid with an alkyl halide for example, ethyl sulphite may be made by the reaction expressed by the equation,... 

Ethyl iodide was discovered by Gay-Lussac, ethyl bromide by Serullas, ethyl thiocyanate by Liebig, ethyl cyanide by Pelouze, ethyl formate by Dobereiner, ethyl carbonate by Ettling and investigated by Cahours, ethyl nitrate by Millon, ethyl borate by Ebelmen, and ethyl sulphite by Ebelmen and Bouquet by the action of sulphur chloride on alcohol. Acid ethyl tartrate (acide tartrovinique) was discovered by Guerin-Varry, normal ethyl tartrate by Demondesir, and several unusual esters by Kuhlmann. ... 

Absolute diethyl ether. The chief impurities in commercial ether (sp. gr. 0- 720) are water, ethyl alcohol, and, in samples which have been exposed to the air and light for some time, ethyl peroxide. The presence of peroxides may be detected either by the liberation of iodine (brown colouration or blue colouration with starch solution) when a small sample is shaken with an equal volume of 2 per cent, potassium iodide solution and a few drops of dilute hydrochloric acid, or by carrying out the perchromio acid test of inorganic analysis with potassium dichromate solution acidified with dilute sulphuric acid. The peroxides may be removed by shaking with a concentrated solution of a ferrous salt, say, 6-10 g. of ferrous salt (s 10-20 ml. of the prepared concentrated solution) to 1 litre of ether. The concentrated solution of ferrous salt is prepared either from 60 g. of crystallised ferrous sulphate, 6 ml. of concentrated sulphuric acid and 110 ml. of water or from 100 g. of crystallised ferrous chloride, 42 ml. of concentrated hydiochloric acid and 85 ml. of water. Peroxides may also be removed by shaking with an aqueous solution of sodium sulphite (for the removal with stannous chloride, see Section VI,12). 

When an alkali sulphite is allowed to react with the bromide or iodide of an organic radical, for example with ethyl iodide, the resulting compound, ethylsulphonic acid, undoubtedly possesses the unsym-0. OH... 

This diethyl sulphite is a colourless liquid of b.pt. 161° C., and is quite distinct from the foregoing isomeric ethyl ethylsulphonate (which boils at 207° C.), being decomposed by aqueous alkali with formation of alkali sulphite and ethyl alcohol2 and reacting with organo-magnesium... 

Whilst the formation of thionyl chloride by the action of phosphorus pentachloride on an alkali sulphite favours a symmetrical structure for the latter, the interaction of an alkali sulphite with ethyl iodide, as mentioned already, is directly opposed to this evidence, as also is the production of sodium sulphite on reducing sodium dithionate with sodium.5 The remaining inorganic evidence is little more satisfactory. 

Isomeric Sulphites.—The evidence is this —Sulphur alcohol or ethyl-hydrosulphide (also termed mercaptan ), when oxidised by boiling with dilute nitric acid, is converted into ethyl-sulphonic acid, thus ... 

Schwicker claimed to have prepared distinct derivatives by the action of ethyl iodide, but a repetition of his work by Fraps1 led to negative results. Arbusoff2 investigated the interaction of methyl iodide and the double sulphites obtained by Schwicker s method, the sodium atom in each instance being replaced by a methyl-group, with formation of the same compound,... 

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