Se ee SN CU 
oo el 
_— Silicic methyd was heated with it for two se 
Silicon with Alcoholic Radicals. 327 
ge the zinc methyd which is formed from it. Indeed chlorid 
of silicon is not decomposed even by sodium except at a high 
temperature. 
_ In order to allow the zine to act upon the small quantity of 
iodid of methyl contained in the zine methyd, the digester 
was first heated for 12 hours at 120°, and then for 10 hours at 
200° to effect the reaction between the chlorid of silicon and 
the zine methyd. The digester was cooled with ice before it 
was opened. After the escape of the gas the product was dis- 
tilled into recipients cooled with ice, and then treated at 0° 
with a solution of caustic potash in order to destroy any excess 
of chlorid of silicon which might be present. It is important 
employ nearly equivalent quantities of zinc methyd and of 
silicic chlorid, because the heat which is developed by the 
action of the caustic potash upon the excess of either occasions 
a loss of the silicic methyd. 
_Silicic methyd obtained by this process is a clear transparent 
liquid, lighter than water and boiling at 380°-31°. It burns 
With a luminous flame and a smoke of silicic acid. The follow- 
ig analyses were made of this substance: 
é Substance 0°1855 grms. ; C0,=0°3660 grms. ; H,O=0°2275 
KS OPN, 
The substance was burnt too quickly in the first analysis 
and a loss of carbonic acid was occasioned. 
IL Substance=0-1940 grms. ; CO,=0°3875 grms. ; H,O=02850 
grms. 
L 0. Calculated for Si(CH3), 
C=53°81 54°47 54: 
H=18-63 13°46 13°63 
nitein acid:-wae.-the oxydizing agent used and 
tely decomposed 
_ found on opening the tube not to be comple 
oe Tit‘mscoond : determination ‘we used a very large excess of fum- 
