46 IVIESSES. E. FEANKLAXD AND B. F. DUPPA'S 



Its relations to acetone and diethylated acetone are then clearly seen in the following 



formulae : — 



rCMeO fCMeO K 



ICH, ICEtH, L( 



fCMeO 



L3 ^vy ^o J.J.2 '-C Et2 H 



Acetone. Ethylated acetone. Diethylated acetone. 



Ethylated acetone is a colourless, transparent and very mobile liquid, possessing a 

 powerful and pleasant odour, in which that of camphor is slightly perceptible. Its 

 specific gravity is -8132 at 13° C, and -8046 at 22° C. It boils steadily at 101° (barom. 

 760 mUlims.), and its vapour has the density ^'QSl, as calculated from the following 

 data, theory requiring 2-971. 



Weight of ethylated acetone '1368 grm. 



Observed volume of vapour . 55-64 cub. centims. 



Temperature of bath 124° C. 



Height of barometer 773 millims. 



Difference of heights of mercury inside and outside tube . . 80 millims. 



Height of spermaceti column reduced to millims. of mercui-y 15-7 niillims. 



Ethylated acetone neither absorbs oxygen from the air, nor reduces ammoniacal solu- 

 tions of silver. It yields with concentrated solution of sodium bisulphite a compound 

 in large and brilliant crystals, which are quite permanent in the air, and which at once 

 distinguish it from diethylated acetone, the latter producing under the same circum- 

 stances an oily compound. Ethylated acetone is not altered by prolonged ebullition 

 with alcoholic potash. Its relations to numerous isomers are described below. 



/3. Examination of the products derived from the replacement of hydrogen hj ethyl in 



the methyl of acetic etlier. 



This portion of the original product derived from the action of sodium and ethylic 

 iodide upon acetic ether, and which boiled considerably below the portion a, was sub 

 mitted to repeated rectifications, and was thus resolved to a great extent into two ethe- 

 real liquids, one of them boiling between 118° and 122°, and the other between 150° 

 and 157° C. On treating these liquids with boiling baryta- water for several hours in 

 order to remove traces of ethylic diethacetone carbonate and ethylic ethacetone carbo- 

 nate, the point of ebullition of the first was rendered quite constant at 119° C, and that 

 of the second at 151^ C. 



Submitted to analysis, the first of these liquids yielded the following results : — 



I. -1710 grm. gave -3922 grm. carbonic acid and -1626 grm. water. 

 II. '2190 grm. gave -5007 grm. carbonic acid and -2063 grm. water. 



These numbers coincide closely with those calculated from the formula 



^\ H12 Og. 



