SYNTHETICAL EESEAECHES ON ETHEES. 



47 



Calculated. 



A 



Found. 



A 



H 



12 



116 100-00 

 The formula and habits of this compound show it to be ethacetic ether'. 



C 



o 



PC2H5. 



Ethacetic ether is produced from acetic ether by the following reactions ; 



C H 

 LH 



2C. 



■2I 



H 

 H 

 H 



+Na2=2C2- 



O 

 OCH 



'Na 



H 



H 



+H, 



O 



Acetic ether. 



Na 



H 



H 



O 



OC2H, 



Sodacotic ether. 



rcgH^ 



+aH.i=Co 



H 

 H 



+NaI 



■v 



O 

 OC2H5 



-> ' 



Sodacetie ether. Ethacetic ether. 



Ethacetic ether possesses all the properties of butyric ether. It is colourless and trans- 

 parent, and when largely diluted mth alcohol possesses the characteristic odour of pine- 

 apples, which is undistinguishable from that of butyric ether under the same circum- 

 stances. Its density is. -8942 at 0° C, that of butyric ether being, according to Pjeree, 

 •9019 at 0°C., numbers which coincide with each other as closely as could be expected. 

 The boiling-point (119° C.) of ethacetic ether also agrees exactly with that of butyric 

 ether given by the same authority, as does the vapour-density, which was ascertained to 

 be 3-96 from the following data, the theoretical number being 4-04. 



Weight of ethacetic ether -1769 grm. 



Observed volume of vapour 57-24 cub. centims. 



Temperature of bath 148° C. 



Height of barometer 763-5 millims. 



Difference of height of mercury inside and outside tube . . 75-7 millims. 



Height of spermaceti column reduced to millims. of mercury 15-7 millims.. 



h2 



