340 Friedel and Crafts on the Ethers of Silicic Acid. 
This had already been obtained by the aes of methylic 
alcohol on the normal silicate of ethyl.* It is also produced, 
a the methylic dichlorhydrine is treated with ethylic al- 
co 
A product, obtained in this way, and boiling at 143°-146°, 
was analyzed. 
I. Substance, weight, - = - thy fa ase 0:2700 gr. 
Naga Avia co cae jor! OSES 
II. Substance, weight, - - - - 0:2400 “ 
witeeats Rom RAMA ye SUE os: QeggR 
MiGh ee 4 ee i IO 
III. Substance, weight, - - - - 03635 “ 
Sid - - - - - - 0°1225 “ 
Theory. 
I. I. Il. Si(€H,).(€2H;)o,04 
C, 39°56 40°00 
H, 8°83 oe 
Si, 15-73 15°71 
15 
The product used in analysis No. 111 was that which remained 
in the bulb after a determination of vapor-density. 
Density of vapor =6:178. Theory 6-288. 
Difference between 2 weights af bails - 0°9569 gr. 
Temperature of balance, - 21°5 
oil-bath, - - . 192° 
Height of nite - . - - 763°7 mm. 
Capacity of bulb, - . : - 279°75 cc. 
Air remaining, = - - - - . 5°25 cc 
a density of liquid at 0°=1-004. 
monoethylic triethylic ether, was obtained by treating the 
ee of the normal ethylic silicate with methylic 
It boils at 155°-157°. 
I. Substance, weight, - - - - 0°3945 gr. 
a aT ee et ee 
Il. Substance, weight, - - - - 0°2325 “ 
ON boas Se eee 
gO. a. Se eee 
Theory. 
I Ir. Si€H,,(€,H,)5,O4- 
C, 42-71 43°30 
4H, 9°21 9-28 
Si, 13-96 14:43 
We repeated with the alcohol, that distilled, the same experi- 
‘Ment, that was made, where the monoethylic trimethylic ether 
* See page 158. 
