1865.] Researches on Ethers. 461 



Ethylic ethacetone carbonate is produced by the action of sodium and 

 ethylic iodide upon acetic ether, according to the following equations : 



(TT 

 O 7 ' +Na=C 4 ^ a +C 2 H,0 

 OC,H 5 I jj 



Acetic ether. LOCH 



Ethylic sodacetone 

 carbonate. 



+ NaI. 



lOC 2 H 5 ^OC 2 H 5 



Ethylic sodacetone Ethylic ethacetono 



carbonate. carbonate. 



Ethylic ethacetone carbonate is a colourless and transparent liquid, pos- 

 sessing a very fragrant odour and an aromatic taste. It is nearly insoluble 

 in water, but miscible in all proportions with alcohol and ether. Its den- 

 sity in the liquid condition is -9834 at 16C. It boils at 195 C., and distils 

 without decomposition. A determination of its vapour-density gave the 

 number 5 '36. The above formula requires 5'45. Ethylic ethacetone car- 

 bonate 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 : 



fH 3 



I5L_ f0 " fS. 



+ 2KHO=C 



OK 



0" 



Alcohol. 



IOC,, H, Ethylated 



Ethylic ethacetone acetone, 



carbonate. 



Ethylic ethacetone carbonate is still more readily decomposed by aqueous 

 solution of baryta and by alcoholic potash, in both cases ethylated acetone 

 and a carbonate of the base is 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 com- 

 bination with, and subsequent separation from, bisulphite of soda. Ethyl- 

 ated acetone thus purified and rectified from quicklime yielded on analysis 

 numbers agreeing well with the formula 



which may be reduced to the radical type as follows : 



