SYNTHETICAL EESEAECIIES ON ETHERS. 



45 



From these numbers the specific gravity was calculated to be 5 "36; theory requires 

 5 '45. Ethylic cthacetone carbonate, unlike ethylic-diethacetone carbonate, and in oppo- 

 sition to Geuther's statement, is readily attacked by boiling aqueous solutions of potash 

 and soda, yielding carbonates of these bases, alcohol, and ethylated acetone according to 

 the following equation : — 



O 



C4 



H 



(O 



C2H5 ^2KHO=C<^OK+C2H50H+C3 



O 



ioK " 



Y 



Alcohol. 



o 

 a 



IH, 



C2H, 



Ethylic cthace- 

 tone carbonate. 



Ethylated 

 acetone. 



Ethylic ethacetone carbonate is still more readily decomposed by aqueous solution of 

 baryta or by alcoholic potash ; in both cases ethylated acetone and a carbonate of the 

 base are produced. 



Ethylated acetone may be freed from alcohol by repeated washing with salt and water, 

 but it is best obtained in a state of absolute purity by combination with, and subsequent 

 separation from sodium bisulphite. Ethylated acetone thus purified andrectified from • 

 quicklime, gave on analysis the following numbers : — 



•1483 grm. gave "3799 grm. carbonic acid and -1575 grm. water. 



This result agrees well with the formula 



C5 Hjo O, 



as seen from the following comparison of experimental with theoretical percentage num- 

 bers : — 



Calculated. 

 ^v 



C5 

 H 

 O 



10 



60 

 10 

 16 



86 



69-77 

 11-63 

 18-60 



100-00 



Found. 



69-86 

 11-80 



The formula of ethylated acetone given above may be reduced to the radical type as 

 follows : — 



C3^ 





rcH, 



C.,H, I 



CMeO 

 CEtHa 



IH., 



MDCCCLXVl. 



H 



