118 ETHYLENE SERIES. 



2. Amylene, C 5 H 10 = ^j^ I CH.CH:CH 2 . Is pro- 



duced, together with diamylene, triamylene, and small 

 quantities of other hydrocarbons, by the distillation 

 of amyl alcohol of fermentation over zinc chloride. 

 Colorless liquid ; boiling point, 35 ; specific gravity, 

 0.663 at 0. When shaken with concentrated sul- 



?huric acid, it is converted into polymeric compounds 

 liamylene, triamylene) ; combines with hjdriodic 

 acid, forming the iodide of amylenehydrate (p. 71.) 



Amylene bromide, C^Br 2 . Colorless liquid, 

 boiling at 170-180, not, however, without a slight 

 decomposition. 



3. Isoamylene, C 5 H 10 = ^ j C:CH.CH 3 or 



pTT3 OH 2 ) 



CH 3 [ C:CH2< Is formed from tertiary amyl iodide 

 by the action of very concentrated alcoholic potassa. 

 Colorless liquid, that boils at 35. Unites with 

 hydriodic acid, forming tertiary amyl iodide. 



Other isomeric hydrocarbons are produced by the 

 action of sodium on chlorinated amyl chloride (alpha- 

 amylene, boiling point, 28-30) and by the action of 

 zincethyl 011 chloroform. 



5. Hexylene, C 6 H 12 . Is produced from the iodide of 

 secondary hexyl alcohol (p. 72) by boiling with alco- 

 holic potassa. Colorless liquid, boiling at 68-70. 

 Combines with hydriodic acid regenerating secondary 

 hexyl iodide. 



It is not known exactly, whether the hexylene, ob- 

 tained in the same manner from the iodide of the 

 primary alcohol, and also boiling at 68-70, is identical 

 with that mentioned, or not. Another hexylene (alpha- 

 hexylene, boiling point, 68-71) is obtained by the 

 action of sodium on bichlorinated hexyl hydride (from 

 petroleum). 



