C. E. Lineharger — Viscosity of Mixtures of Liquids. 339 



n. The ethyl iodide was made by the action of iodine and 

 red phosphorus on absolute alcohol ; by a couple of distillations, 

 a constant boiling product was obtained, which when again 

 distilled gave two fractions having specific gravities at 25°*0 

 referred to water at the same temperature, 1*93012 and 1*93015 

 respectively. 



Table XIV. 



Viscosity of Mixtures of Acetic Ether (f.I) and Nitrobenzene (g). 



Temperature — 25°-0 





Molecular 











Percentage 



percentage 



Specific 



Calculated 



Observed 





composition. 



composition. 



gravity. 



viscosity. 



viscosity. 



Diff. 



C6H5NO2C4BSO, 



, C6B6NO2C4H8O; 



2 









0-000 100 000 



0-000 100 000 



0-89663 





000434 





22-896 77-104 



17-530 82 470 



0-95669 



000755 



0-00582 



+ 0-00173 



56-100 43-900 



47-770 52-230 



1-05318 



0-01219 



0-00889 



+ 000350 



75-530 24470 



68870 31-130 



1-11618 



0-01491 



0-01204 



+ 0-00287 



100-000 000 



100-000 0.000 



1-20200 





0-01834 







Table XY. 









Viscosity of Mixtures of Carbon Tetrachloride (e) and 



Chloroform 



(h). 









Temperature —25 



°-o 





Molecular 











Percentage 



percentage 



Specific 



Calculated 



Observed 





composition. 



composition. 



gravity. 



viscosi ty. 



viscosity. 



Diff. 



OCI4 CHCI3 



CCI4 CHCIs 











0-000 100-000 



0-000 100 000 



1-48069 





0-00540 





19 269 80-731 



15-663 84-337 



1-49872 



0-00610 



000569 



+ 0-00041 



57-277 42-723 



50 989 49-011 



1-53772 



0-00736 



000659 



+ 000077 



81-172 18 828 



76-985 23-015 



1-56489 



0-00818 



0-00761 



+ 0-00057 



100-000 0-000 



100-000 0-000 



1-58828 





0-00883 







Table XVI 



. 







Viscosity of Mixtures of Acetic Ether (/. 11) and Carbon Bisulphide (d). 









Temperature —25 



°-o 





Molecular 











Percentage 



percentage 



Specific 



Calculated 



Observed 





composition. 



composition. 



gravity 



viscosity. 



viscosity. 



Diff. 



C4H10O CS2 



C4H10O CS2 











0-000 100 000 



0-000 100.000 



1-25958 





0-00358 





16-359 83 641 



14-451 85-549 



116956 



00375 



0-00367 



+ 0-00008 



39-246 60-754 



35-811 64-189 



1-06877 



0-00398 



000389 



+ 0-00009 



66-413 33587 



63069 36-9U 



0-97681 



000427 



00416 



4-0 00011 



100-000 0000 



100-000 0000 



0-89156 





000462 





(c. II.) Five pounds of toluene were fractionally distilled 

 over sodium a half dozen times or so until the larger portion 

 boiled almost at a constant temperature. Three fractions of 

 nearly a pound each were then made, boiling : a at 109°*90- 

 109°*94; & at 109°-94-110°*00 ; and c at 110°*00-110°-03 under 

 a pressure of 757*7"'"' of mercury. Their specific gravities at 

 25°*0 referred to water at 25°*0' were : a,0S661S; 5,0*85681 

 and <?, 0*85680. 



