Friedel and Crafts on the Ethers of Silicic Acid. 387 
each difference of ©H,. The difference in the case of methylic 
and ethylic-disilicic ethers is 33° or 53° for each difference of 
€ 
= 
The monochlorhydrine of the normal methylic silicic ether 
was obtained, in the same way as the ethylic chlorhydrine, by 
heating together during one hour at 150°, three molecules of the 
ether with one-molecule of chlorid of silicium. Almost the whole 
product boiled at 113°-117° and after several distillations the 
: portion boiling at 114°5-115°'5 gave on analysis— 
j I. Substance, weight, - - : 0°5965 gr. 
sid - - - - - - 0.2295 “ 
II. Substance, weight, - - - - 02695 “ 
ee ea Pei eree  ik.. 
: ES ee ee ee 
IIL. Substance, weight, - en te - 07255 “ 
Ag(l, - fhe Se te oe red CREE 
Theory. 
I. III SiCl(€H,),6,- 
C, 23°31 23°00 
’ 5°85 5°75 
Si, 17°95 17°89 
Cl 22°59 22°68 
4 ? 
,, The density of vapor =5°578. Theory 5:420. 
: Difference between 2 weights of bulb, = 1°2147 gr. 
Temperature of the balance, - - 19° 
“ il bath, - - 176°5 
Barometric height,- - - - 7665 mm. 
ag ere) of bulb, - - - 3695 cc, 
o air remaining. 
in the sequel, thet the chlorhydrine can be used for the prepara- 
tion of mixed ethers. : 
The Dichlorhydrine of methylic-silicic ether was obtained by 
heating two molecules of monochlorhydrine with one mole- 
cule of chlorid of silicium during one hour at 160°. The re- 
action is somewhat less easy than in the case of the formation 
of the monochlorhydrine. The larger part of the product dis- 
tilled at 98°-103°, and the liquid obtained, boiling at this tem- 
rature, after four distillations was analyzed. ef 
I. Substance, weight, - - - - 02565 gr. 
ee 
BG... AS Oe el 
