Chemistry and Physics. 255 
of hypermanganate of potash is to be added until present in excess, as 
shown by the violet color of the solution remaining for a short time. 
g fi 
Paris, Feb. 1866, p. 88. oe 
a new alcohol in which carbon is partially replaced by silicon — 
f p 
pound is first attacked, while chlorid of potassium is formed and the 
monochlorinated compound remains among the products of the action, 
When water is added to the contents of the tube after the action, an oily 
liquid separates which is to be washed twice with water and then treated 
with concentrated sulphuric acid, which dissolves the acetic acid com- 
pound and the oxyd of silicium-triethyl, aren} t ©, leaving the 
Hes : 2°" 5/8 : 
silicium-ethyl and its chlorine derivatives unacted upon. The portion 
of potash and alcohol. The liquid separated by water is again treated 
with sulphuric acid, the solution decanted and poured into water, A 
liquid separates which boils between 208° and 214° C., has a faint ethe- 
al adi acetic smell, and burns with a luminous flame, giving off white 
fumes of silicic acid. This liquid has the formula st 8, and is 
derived from monochlorinated silicium-ethyl by replacing the chlorine by 
oxacetyl, €,H,©. Treated with an alcoholic solution of caustic sotiak 
- body yields a new liquid boiling at 1904,C., and having the formula 
“oH, 9 Le, which is the hydrate corresponding to the acetate above 
