80 M. C. Lea on Ethylamine and Diethylamine. 
ART. X.—On the Reactions of Ethylamine and Diethylamine ; by 
M. Carey Lea, Philadelphia. 
EruyLaMINne. 
In order to ascertain the purity of the ethylamine used, and 
further to test the exactness of the separation by means of picric 
acid, another platinum determination was made with great care. 
ul 
It gave the following results. 
1°3911 grms. substance gave, platinum, °5457 
This corresponds to, per cent 39°23 
Theory requires ‘ 39°29 
A result which taken in connection with analyses already pub- 
lished seems conclusive. 
Reactions of Hthylamine. 
The reactions of ethylamine with metallic solutions have been 
more studied than those of the other ethyl bases; the following 
however do not seem to haye been previously described. 
Gold, terchlorid, reddish precipitate, easily soluble in ex 
cess of precipitant. 
Ruthenium, sesquichlorid, no precipitate, either immediate or by 
standing 48 hours. ‘The action of 
; y i 
assumes a greenish brown or olivé 
€. . 
Palladium, protochlorid, an immediate highly crystalline precip 
' 
LET 
tate which redissolves in part, in excess — 
of the precipitant, forming a colorless — 
Uranium, nitrate, yellowish precip. insoluble in excess of 
recipitant, a 
Cerium, protochlorid, perfectly pure protochlorid of cerium pre 
according to Holtzman’s modifi 
cation of Hermann’s method, gave 4 
dirty precipitate insoluble in excess of — 
the * it fe: 
AR eames 
