394 
Stannous Chloride: SnCl. 
oe | Maximum Pressure H | 
| 3 Beye wane k | | Surface- | Molecular | 
5 0 | A tension zin eo ‚_ Surface- | 
f - | | gravity do | energy » in | 
=.= : Erg per cm2, | 4° | | 
| 5 se Peet Dynes Erg per cm?._ 
| | 
JO) Oa | 4447 97.0 3.289 1449 
328 | 3.298 | 4397 96.2 | 3.263 1445 
361 3.216 | 4283 93.9 | 3.222 1422 
ST 3155 4207 92.0 | 3.202 1402 | 
405 3.048 4064 89.0 3.166 1364 
430 2.963 | 3951 86.4 3.145 1333 
452 | 2.874 3832 83.9 | 3.108 1302 
480 2.796 3728 81.6 3.072 | 127 
| 
Molecular weight: 189.92. Radius of the Capillary tube: 0.04363 cm. at 18° C. 
Depth: 0.1 mm. 
The substance was purified by distillation in a stream of dry hydrochloric 
acid. The salt melts at 250° C. At 290° C. the specific gravity is: 3.310; at 
345° C.: 3.241; at 398°.7 C.: 3.174. In general at # C.: d> = 3.298—0.001253 
‚_(£—300). The temperature-coefficient of » has a mean value of about 1.0 Erg | 
| per degree. | 
§ 5. If now we review once more the results obtained in the 
case of these molten salts (see the following table), it becomes quite 
clear, that an evident difference in behaviour in comparison with the 
organic liquids can be stated with respect to the very small values of 
Ou ube : Ea 
the temperature-coefficient = While in the case of organic liquids 
t 
0 eee. 
the normal values of = is about 2.24 Erg per degree Celsius, it is 
commonly much smaller in the case of molten salts, and varies 
there between 0.8 and 1.0 Erg per degree. Although a special 
eee es . 
regularity in the magnitude of Seu the different cases can not be 
k t 
stated, the mean value of it in the case of homologous salts of the 
same halogenide seems to show a tendency to increase generally 
with augmenting atomic weight of the metal. Formerly it has oecasion- 
Ou. 
ally been coneluded from the very small values of ee the case of 
molten salts,') that these should be associated to a rather high degree. 
If one assumes, that for such electrolytes indeed the same kind of 
3) Borromuey, Journ. Chem. Soc. 83, 1424, (1903); a.o. 
