M. C. Lea on reactions of Ethylamine and Diethylamine. 83 
Lead, nitrate, An immediate precipitate insoluble in 
ex 
Mercury, protochlorid, White, insoluble in excess. 
Tin, protochlorid, Same reaction. 
“  bichlorid, White, soluble in excess, 
Glucina, sulphate, White, insoluble in excess. 
anganese, protosulphate, Pale brown, insoluble in excess. 
Magnesia, sulphate, hite, insoluble in excess 
ia sesquioxyd, ammonia _ Brick red, insoluble in excess. 
alum 
? 
Antimony, chlorid, Brick red, insoluble in excess. 
2, tartar emetic, At the first moment no precipitate, then 
a cloudiness and finally a heavy precip- 
itate. 
Bismuth, nitrate, White, insoluble in excess of precipitant. 
ranium, nitrate, Yellow, insoluble in excess, 
Some of these reactions are highly interesting. It has been 
~ already shown under the head of ethylamine that in addition to 
the differences already known to exist between its reactions, and 
those of ammonia, its behavior.towards solutions of gold an 
Tuthenium is highly characteristic. We now see that diethyl- 
amine, not only resembles ethylamine in these properties, but 
shares with it its remarkable capability of redissolving precip- 
itates of alumina. Ethylamine and diethylamine moreover re- 
semble each other and differ from ammonia in their reactions with 
lum, nickel, cobalt, and bichlorid of tin. They both act like 
ammonia towards solutions of glucina, zirconia, protoxyd an 
a3: smh of cerium, peroxyd of uranium, protoxyd and deu- 
toxyd of molybdenum and many other metals, The only oxyds 
Which all three are capable of redissolving are those of silver an 
Copper. Silver dissolves abundantly in all three; copper much 
more sparingly in ethylamine than in ammonia, while in diethyl- 
amine this property almost disappears, a faint blue color indicates 
the solution of a mere trace. Dnless the aqueous solution of 
mie lamine is strong, not even a trace of copper is taken up 
The action of diethylamine on terchlorid of gold was further 
€xamined to ascertain if the resulting compound had any prop- 
rei Corresponding with those of fulminating gold. The clear 
Yellow solution obtained from solution of terchlorid of gold by 
treatment with dieth ylamine, dried up to a somewhat crystalline 
eliquescent mass which when heated, decomposed without the 
slightest explosion. 
It is evident from the above that the relations which exist be- 
tween ethylamine and diethylamine are muc closer than those 
between eth lamine and ammonia. In fact, in all the above 
