M. Crafts on Sulphide of Ethylene. 387 



(G 5 H ll )'H (G 5 H 10 ) W J"^ 



Hydride of am vie. L-" r 



Bromide of amylene. 



(G 5 H n )'Br (G 5 H 10 )"/!? 



Bromide of amyle. V. 



Hydrobromate of amylene. 



(G 5 H n )'HO (€ 5 B Io y'*fSri 



Amylic alcohol. l 11 ^ 



Hydrate of amylene. 



M. J. M. Crafts has investigated the sulphide of ethylene*, 

 G 2 H 4 S. It is best obtained by the action of bromide of ethy- 

 lene on sulphide of potassium. It forms white crystals, which 

 distil at 200°, and at 112° solidify, forming a crystalline mass. 

 It is acted upon by bromine ; and whatever the proportions in 

 which the two substances are employed, the body C 2 H 4 SBr 2 

 is obtained. This is a yellow substance, which is insoluble in 

 ether or in alcohol. It is changed by the action of moist air 

 into white crystals ; by the action of water the change is more 

 rapid, and the water contains hydrobromic acid. It is the pre- 

 ceding compound, in which the bromine is replaced by oxygen, 

 G 2 H 4 SO. 



The author made some experiments on the sulphide of cthyli- 

 dene, an isomer of sulphide of ethylene, obtained originally by 

 Weidenbusch by the action of sulphuretted hydrogen on aldehyde ; 

 but the results he obtained showed that the two bodies were 

 quite different in their physical properties. 



In a subsequent communication f, the author shows that by 

 the action of nitric acid on sulphide of ethylene the body G 2 H 4 S 

 is obtained ; and by operating with strong nitric acid in closed 

 tubes a binoxide, G 2 H 4 S0 2 is obtained, and the liquid contains 

 at the same time a quantity of hyponitrous acid. If the oxida- 

 tion has not been driven too far, the liquid contains also some 

 of the lower oxide. They are separated by taking advantage of 

 the solubility of the first in water, or, better, by dissolving in 

 strong nitric acid, and adding water, by which the body G 2 H 4 SO 2 

 is precipitated. 



Husemann has prepared the sulphocarbonate of ethylene. It 

 is obtained by the action of bromide of ethylene on sulphocar- 

 bonate of sodium j chloride of ethylene also yields it, but the 

 action is not so energetic. 



c 2 s 2 'n ~ 4 c 4 H 4/ n 9V -o ,c 8 s*n Q4 



NaJ & + Br 2 j~^ x>alir + C 4 H 4,, J b 

 Sulphocarbonate Bromide of Bromide Sulphocarbonate 

 of sodium. ethylene, of sodium. of ethylene. 



Comptes Rendus, June 23, 1862. t Ibid. August 18, 1862. 



