BETWEEN THE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 4G3 
Mean temp. 
Difference. 
Observed (mean). 
Calculated. 
O 
0'.35 
-002589 
•002592 
+ -000003 
5-62 
-002459 
•00246] 
+ -000002 
10-27 
•002358 
•002355 
- -000003 
15-33 
-002249 
•002248 
- -000001 
20-41 
•002147 
•002148 
+ -000001 
25-25 
•002060 
•002060 
•000000 
28-94 
•001996 
•001997 
+ -000001 
32-02 
•001944 
•001946 
+ -000002 
29-93 
•001985 
•001980 
- -000005 
Diollyl (Hexine). CH 3 :CH.(CH 2 ) 2 .CH:CH 3 . 
Prepared for us by Mr. H. Grime, Assoc. R.C.S., by the action of sodium on allyl 
iodide. Portions of about 100 grams of the pure iodide were placed with about half 
their weight of sodium in a flask attached to a reflux condenser. Two drops of 
absolute alcohol were added and the contents of the flask maintained at 80° for 
1^ hours in a water bath, and after standing for from 12 to 24 hours the diallyl was 
distilled off and subsequently rectified. 
The sample was allowed to stand over sodium until required for our observations. 
On distillation, it boiled between 59°'3 and 60°'2, by far the greater portion coming 
over between 59°’45 and 59°‘56. This fraction was redistilled and the portion 
boiling between 59°'38 and 59°'43 was employed for the observations. Bar. 
760T millims. Corrected and reduced b.p. = 59°'4. 
Determination of vapour density : 
Found, 407 Calculated, 41‘0. 
The observations for viscosity gave the following results :—■ 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
Temp. 
Press. 
Corr. 
'/• 
O 
0-38 
103-25 
•000061 
•003372 
O 
0-37 
103-19 
•000061 
•003377 
5-95 
103-15 
•000064 
•003165 
5-95 
103-11 
•000064 
•003172 
10-75 
103-10 
•000066 
-003010 
10-82 
103-04 
•000067 
-003011 
15-44 
102-99 
•000069 
•002866 
15-49 
102-97 
•000069 
•002867 
20-76 
102-94 
•000072 
•002713 
20-76 
102-89 
•000072 
•002726 
25-49 
102-91 
•000075 
•002597 
25-43 
102-84 
•000075 
•002600 
30-70 
102-89 
•000078 
•002473 
.30-71 
102-82 
•000078 
•002474 
36-07 
103-07 
•000081 
•002351 
.36 06 
105-04 
•000081 
•002358 
42-02 
102-60 
•000085 
•002226 
41-96 
102-54 
•000084 
•002232 
46-77 
102-56 
•000087 
•002135 
46-75 
102-50 
•000087 
•002140 
51-55 
102-50 
•000090 
•002044 
51-53 
102-44 
•000090 
•002049 
56-21 
102-43 
•000093 
•001965 
56-19 
102-37 
•000093 
•001968 
