BETWEEN THE VISCOSJTr OF LIQUIDS AND THEIR CHEMICAL NATURE. 
85 
the formula 
122-591 
~ (174-318 + 
is obtained, which gives values agreeing well with those observed. 
Ethyl Isohutyl Ether. CHs.CH.O.CHoCH. (CHg),. 
A sample prepared from ethyl iodide and sodium isobutylate was distilled from 
sodium wire, and the portion boiling between 80°‘74 and 80°-79 was collected sepa¬ 
rately. Bcir, 750-2 millims. Corrected and reduced b.p. := 81°'18. 
The observations for viscosity gave :— 
Left limb. 
R 
ght limb. 
Temp. 
Press. 
Corr. 
v- 
ri’ 
lemp. 
Press. 
Corr. 
V- 
O 
0-3G 
103-68 
•000046 
■004800 
i O 
0-36 
103-69 
•000046 
•004807 
7-,34 
103-26 
•000049 
•004396 
7-34 
103-29 
•000049 
•004399 
15-13 
101-98 
•000053 
•004001 
15-07 
101-96 
•000053 
•004)06 
21-61 
101-58 
"000056 
•003708 
21-80 
101-58 
•000056 
•003711 
28-22 
101-58 
•000060 
•003449 
28-06 
101-31 
•000060 
■003458 
35-41 
101-39 
•000064 
•003200 
35-38 
101-36 
•000064 
•003200 
41-80 
100-87 
•000067 
•002992 
41-72 
100-82 
•000067 
•003000 
48-94 
104-00 
•000073 
•002793 
49-00 
103-97 
•000073 
•002790 
56-97 
102-39 
•000076 
•002613 
5601 
102-34 
•000076 
■002617 
6348 
102-25 
•000080 
■002439 
63-16 
102-11 
•000080 
•002441 
70-69 
102-16 
•000084 
•002277 
70-64 
102-11 
•000084 
•002282 
77-43 
102-04 
•000088 
•002147 
i 
77-53 
102-01 
•000088 
•002148 
As in the case of methyl isobutyl ether, determinations had to be made of the 
thermal expansion of this liquid. 
The observations v/ith the dilatometer gave :— 
T. 
Obs. 
Calc. 
T. 
Obs. 
Calc. 
0-0 
2126-13 
2125-89 
48-09 
2267-85 
2267-87 
6-51 
2143-50 
2143-65 
56-31 
2295-19 
2295-15 
16-.33 
2171-10 
2171-20 
63-84 
23-20-91 
2321-06 
23-87 
2193-00 
2193-03 
71-97 
2350-27 
2350-12 
32-02 
2217-41 
2-217-37 
76-60 
2366-82 
2366-83 
40-17 
2242-52 
2242-54 
The observed values lead to the formula:— 
V = 2125-89 d- 2-7009474 t + -00416124 f- + -00002225 t^, 
from which the calculated values are obtained. 
