HYDROCARBONS. 31 



7. Normal Heptyl Hydride (Heptan), C 7 II 16 = CH 3 .CH 2 . 

 CIF.CIP.CIP.CH .CII 3 . 



Is contained in the light oil of cannel coal-tar and 

 in large quantity in petroleum. Can be obtained from 

 these sources by partial distillation. Boiling point, 

 99 ; specific gravity, 0.699. 



Ethyl-amyl, C 7 H 16 =CIP.CH 2 .CH 2 .CH 2 .CH. 



By the decomposition of a mixture of ethyl and amyl 

 iodides (the latter from ordinary amyl alcohol) with 

 sodium. Boiling point, 90.5; specific gravity, 0.6819 

 at 17. 



Dimethyldiethylformene, C 7 H 16 



chloride. Boiling point, 86-87; specific gravity, 

 0.711 at 0. 



8. Normal Odyl Hydride (Octan),C*H l * = CIP. CH 2 . CIP. 

 CIP.CIP.CIP.CIP.CH 3 . 



The hydrocarbons obtained by the action of sodium 

 on butyl iodide, from methylhexyl carbinol by reduc 

 tion, from sebasic acid and from octyl alcohol, all appear 

 to be normal octyl hydride. Boiling point, 123-125; 

 specific gravity at 17, 0.7032. 



In regard to the constitution of the remaining dis 

 covered hydrocarbons nothing is as yet known. 



Boiling point. Specific Gravity. 



Nonyl hydride, C 9 II 20 . . 136-138 0.741 



Decatyl hydride, C 10 H 22 . . 158-162 0.757 



Undecyl hydride, C 11 !! 24 . . 180-182 0.766 



Lauryl hydride, C 12 H 26 . . 198-200 0.778 



Cocinyl hydride, C 13 H 28 . . 218-220 0.796 



Myristyl hydride, C 14 IP . . 236-240 0.809 



Benyl hydride, C 15 H 32 . . 258-262 0.825 



Falrnityl hydride, C 16 !! 34 . . 280 



\0 9 



