26 



Proceedings of the Royal Irish Academy. 





Boiling Points ix Oextigkade Degkees. 



Alcuhol. 



A. 



AAV. ' 



A.U. 1 



' i i 

 A.B. : A.T. jA.H.W.U.B."Vr. 



1 ! 



A.T.W. 



Methyl, 



64-7 



Xone 



.50-0 



5S-35 



Xone 



Xone 



None 



None 



Ethyl, 



78-3 



78-15 



aS-7 



6S-J5 



76-7 



56-6 



64 85 



74-55 



Isopropyl, . . - • - 



82-4.5 



SO-37 



610 



71-9 



80-6 



58-2 



66-5 



76-2 



Tertiaiy Butyl, .... 



82-05 



79-9 



63-7 



73-95 



p 



58-9 



67-3 



— 



H-Propyl, . . . . • 



97-2 



87-7 



65-65 



77-1 



92-6 



59-95 



68-5 



8005 



Seconciary Butyl, .... 



99-6 



88-5 



67-5 



79 





61-1 



? 



— 



Tert. Amyl (5) (CHals CCOHjCaHs, 



102-0 



87? 



68-5 



9 



99-2 



— 





82 



Isobutyl, ..... 



108-0 



89-9 



68-1 



79-85 



101-15 



Jfoiie 





83 



Amyl (8) (CHs)^ G . CHjOH, 



112? 



— 







— 









Amyl (6) (CHsjsCU . CH(OU) . CHs, 



113 



— 







— 









H-Butyl, ..... 



116-9 



92-25 







105-5 









Amyl (3) CaHiCIH'.OH) . C2H5, ■ 



117 



— 







— 









Amyl (2) CHsCHIOHjCH. . CHa. 



119 



— 







— 









Amyl (4) C2H5CH(CH3) . CH2OH, 



128 



— 







— 









Amyl (7) (CHsHCH . CHo . CIliOH, 



131-8 



95-15 • 







IlO-o 









>i-Amyl (1) CH3 . CH2 . CH2 . CH2 . CH2OH, 



137-9 



— 















n-Octyl, ..... 



178-7 



98 















Tho plpr\}inl_]laYQnfi nnw 



fi {ficr 



1 ^ xur\ 



nlrl 11 



Tfoi'can 



t t-Vio 



VPTt.lf 



^al liTi 



p 



representing the boiling point of hexane, 68'95°, at a temperature of 

 about 112'. It is quite possible that amyl alcohol (8), the primary alcohol 

 derived from tetramethyl methane,^ may form au azeotropic mixture with 

 hexane, but it is much less probable that amyl alcohol (6) would form such 

 a mixture, and it may be regarded as cer.ain that none of the alcohols 

 with higher boiling points would do so. 



From the alcohol-hexane-water curve it is obvious that methyl alcohol 

 could form no ternary azeotropic mixture, since the boiling point would be 



' There appears to be no recorded determination of the boUing point of this alcohol, 

 but the b.p. of normal amyl alcohol is 101 '7 degrees higher than that of normal 

 pentane, and of symmetrical isoamyl alcohol (7) 103 '5 degrees higher than that of 

 isopentane. It may therefore be conjectured that the b.p. of amyl alcohol (8) is 

 about 102-5 degrees higher than that of tetramethyl methane, 9'5'. 



