SULPHURIC ACID ON DIALLYL. D 



Nascent hydrogen evoked from sodium amalgam ap- 

 pears to be without action upon hexylene pseudoxide. 

 To ioo grams of sodium amalgam, containing 5 per 

 cent, of sodium, 15 grams of C 6 H IZ 0, together with 

 water, were added, the mixture being frequently shaken 

 during the course of some hours. Next morning an ad- 

 ditional 100 grams of sodium amalgam, containing the 

 same percentage of sodium, were added. The pseudoxide 

 was then allowed to remain in contact with the amalgam 

 for two days, after which the mercury was separated from 

 the solution of caustic, and a lighter layer, and heated in 

 a retort ; but no liquid was found to be adhering to it. 

 The solution of soda and the lighter layer were heated in 

 a retort, when the whole of the latter came over. The 

 distillate, on being dried by means of calcium chloride, had 

 the peculiar odour of hexylene pseudoxide, and boiled con- 

 stantly at 93 . The oil was likewise added to sodium am- 

 algam containing 5 per cent, of sodium, in presence of 

 dilute hydrochloric acid; but in this case also the pseud- 

 oxide experienced no change. 



Action of Hydriodic Acid on Hexylene Pseudoxide. — 

 The action between fuming hydriodic acid and hexylene 

 pseudoxide sets in even in the cold. A few grams of the 

 substance were heated at ioo° with an excess of fuming 

 hydriodic acid in sealed tubes for about four hours. A 

 red heavy liquid formed at the bottom of the tube, the con- 

 tents of which were distilled from a retort, in presence of 

 a little phosphorus. The heavy oil of the distillate was 

 separated from the water, dried over calcium chloride, and 

 distilled under a partial vacuum. On distillation much de- 

 composition ensued, with the formation of hydriodic acid, 

 a little free iodine, and with the separation of tarry matter. 

 The distillate was a second time distilled under a partial 

 vacuum, upon which less decomposition took place, and 

 the greater portion came over at about 130 . It was then 



