BETWEEN THE VISCOSITN OF LIQUIDS AND THEIR CHEMICAL NATURE. 
83 
Taking 
= '005359 Tig = '002154 (calculated) = '003398, 
= 0°'58 to = 88°'01 ^3 (from curve) = 39°'27, 
the formula 
104-068 
“ (148-362 + Q1'9734 
is obtained, which gives values in good agreement with those observed. 
Methyl Isohutyl Ether. CH3.0.CH2.GH.(CH3)3. 
Prepared from methyl iodide and sodium isobutylate and fractionated fiom 
sodium wire. In the case of tliis etlier the process appeared to work more 
satisfactorily than in any of the others, the yield being almost quantitative. Two 
series of viscosity observations were made on this substance. 
The fraction used in the first set boiled between 59°'40 and 59°'43; bar. 7G3'8 millims.; 
corrected and reduced b.p. = 59°'26. After the viscosity observations had beeii 
completed, this fraction was digested for two days with phosphoric oxide, and again 
distilled. 
The corrected and reduced boiling-point was practically the same as before, viz., 
59'^'29. A second set of viscosity observations was then made with this liquid, and 
as the results were practically identical with those of the first set, the second only 
are given below. A combustion gave the following results ;— 
Eoniid. Calculated. 
Carbon.68'22 .... GS'IS 
Hydrogen.13-64 .... 13-64 
Observations for viscosity gave ;— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
>h 
Temp. 
Press. 
Corr. 
‘I- 
o ‘ 
0-37 
102-83 
•000057 
•003797 
6-30 
102-78 
•000057 
•003797 
7-00 
102-76 
•000061 
•003524 
6-85 
102-75 
•600061 
•003528 
14-54 
102-66 
•000065 
•003247 
14-48 
102-61 
*0000(55 
■003245 
21-.31 
102-65 
•000069 
-003021 
21-40 
102-58 
•000069 
•003023 
28-92 
102-47 
•000073 
•002796 
28-86 
102-42 
•000973 
•0C2804 
35-98 
102-.31 
•000077 
•002619 
35-98 
102-28 
•000077 
•002620 
42-50 
102-26 
•000081 
•002461 
42-60 
102-19 
•000081 
•002455 
49-64 
102-22 
•000085 
•002309 
49-86 
102-15 
•000085 
•002302 
55-24 
102-10 
•000088 
•002193 
55-21 
102-06 
•000088 
•002192 
M 2 
