1868.] 



of the Series C,i H2)i+2' 



371 



Boiling-point. 



A 



Observed. Calculated. 



Octylhydride, C, H,^ = 

 (from caprylalcohol) 



CH3 CH3 



\/^ 

 CH 

 I 



CK 



124° 



123' 



Zrd group. Hydrocarbons which contain the group isopropyl twice. — 

 The difference in the boiling-points of the members of this group is 25° C. 

 They are di-isopropyl, dibutyl, which, as 1 have shown, is identical with 

 amylisopropyl, butylamyl, and diamyl. 



CH3 CH3 



\ / 

 \/ 

 CH 



Di-isopropyl, C^H^^ = | 



CH 



/\ 



CK CK 



(Not known) C^H, 



Dibutylamyl, 1 q 

 isopropyl. J ^ 



Butylamyl . . C, H.^ = 



CH3 CH3 



\/ ■ 

 CH 



k, 



CH, 

 I 



CH 



/\ 



CH3 CH3 



CH3 CH3 

 \ / 

 \/ 

 CH 



CH, 

 I 



CH 



109 



132° 



83^ 



108° 



133° 



CK 



VOL. XVI 



/ \ 



CH,, CH. 



2 M 



