176 



phatic primary amines are members of a series of mono-substituted am- 

 monias, of which tbe basicity is greater than that of the mother substance. 

 Kobler 1 isolated a salt Inning the composition represented by the 

 formula C 2 H 5 NH,.HgCl. Mtiller 2 investigated double salts of ethyl amine 

 with palladium, Jorgensen 3 those with platinum, Carson and Norton 4 

 those with uranium, Bailey" with vanadium. Bonnefoi' with lithium 

 chloride, and Hoffman and Marburg 7 with mercuric chloride. In most 

 cases more than one salt was produced by varying the proportions of 

 ethyl amine and the simple salt used. Hoffman and Marburg isolated and 

 studied the compounds C,H 5 NH,.HgCl,, (C 2 H 5 NH 2 ) 2 HgCl 2 and C„H 5 NH.HgCl. 

 Bonnefoi found that by leading the vapor of ethyl amine over dry lithium 

 chloride various double salts were produced, the proportion of the con- 

 stituents depending upon the temperature. The following compounds 

 were formed under the conditions indicated : 



Temp. Formula. Heal of Formation, Calories. 



70° C2H5NH2 .LiCl +13834 



58°-70° (C 2 H 5 NH 2 )2 .LiCl + 24817 



Ord. to 58° (C 2 HsNH 2 )3 .LiCl + 35387 



It seems probable, in the light of these facts, that at still lower tem- 

 peratures other compounds will be present, having a still higher ratio 

 of ethyl amine to the original salt ; this should be particularly true with 

 regard to solutions in liquid, anhydrous ethyl amine. In other words, we 

 are here dealing with an application of the mass law, where the tem- 

 perature and mass of the reacting substances are to be considered in the 

 attempt to solve the problem regarding the composition of the resulting 

 compound. We should expect that any solution would contain several 

 compounds of the constituents, having a certain average composition which 

 would depend upon the temperature and degree of dilution. 



Shinn 3 tested, in an approximate but not quantitative manner, the ac- 

 tion of ethyl amine upon 14 silts, concerning which the following resume 

 is here given: 



! Ber., 12, 2323. 



2 Ann., 86, 366. 



3 J. pr. Ch., (2) S3. 517. 



< Am. Ch. .T.. 10. 220. 



5 J. Ch. Soc, i, r,, 60:;. 



6 C. r., 129, 1257. 



7 Ann.. 305, 101. 

 s Loc. fit. 



