BETWEEN THE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 615 
Isologous Hydrocarbons. 
(Normal) 
CnHj,,. 
CnHo)i_2' 
6* 
n. 
r)d\ 
Difference. 
Difference. 
)/#. 
Difference. 
>,d\ 
5 
2.35 
35 
200 
40 
195 
6 
285 
43 
242 
- 17 
302 
7 
323 
30 
293 
8 
369 
• • 
• • 
46 
323 
Substitution of Halogen for Hydrogen. 
Bromine for tydrogen. 
Chlorine for hydrogen. 
n. 
CnHo«Bl’ 2 . 
Difference. 
CjjHow 4- pBr, 
Chlormethanes. 
V#. 
Difference. 
2 
501 
246 
255 
Methylene chloride 
236 
90 
3 
533 
218 
315 
Chloroform. 
326 
180 
4 (Iso) 
666 
290 
376 
Carbon tetrachloride . . 
506 
Compounds Differing by One Carbon Atom. 
Difference. 
Difference. 
Tetrachlormethane. 
506 
-70 
Methyl alcohol .... 
140 
-16 
Tetrachlorethylene. 
436 
Aldehyde . 
124 
Isomers. 
Normal and Iso compounds. 
1 
Normal. 
>,d^ 
Diff'ereuc :. 
Iso. 
>,d^. 
Pentanes . 
235 
- 5 
240 
Hexanes. 
285 
- 1 
286 
Heptanes. 
323 
2 
321 
' Propyl iodides. 
377 
-12 
oov 
1 Propyl bromides. 
315 
-11 
326 
' Propyl chlorides. 
251 
- 7 
258 
Butyric acids. 
334 
0 
334 
i Propyl alcohols. 
376 
-28 
404 
Butyl alcohols. 
1 
410 
-51 
461 
