568 
EESEAECHES OF DE. HOFMAXX AXD M. CAHOTES 
has a perfectly definite and constant composition, it is soluble in ■s^-ater and may be re- 
crystallized from it. The analyses of samples of different preparations gave us the fol- 
lowing results : — 
I. 0-467 grm. of the platinum-salt gave 
II. 0-219 grm. of the platinum-salt gave 
III. 0-272 grm. of the platinum-salt gave 
IV. 0-308 grm. of the platinum-salt gave 
V. 0-2725 grm. of the platinum-salt gave 
VI. 0-099 grm. of the platinum-salt gave 
0-216 grm. of carbonic acid. 
0-129 grm. of water. 
0-082 grm. of platinum. 
0-102 grm. of platinum. 
0-1155 grm. of platinum. 
0-1025 grm. of platinum. 
0-03725 grm. of platinum. 
These results, translated into percentages, lead to the following numbers : — 
I. II. III. IV. V. VI. 
Carbon . . 12-61 — — 
Hydrogen . 3-07 
Platinum. . 37-44 37-5 37-5 37-61 37-62 
The formula of the platinum-salt of allylamine 
c.n,-) 
Cg N, H Cl-f Pt CC= H >N, H Cl, Pt Cl^ 
H j 
requires the following theoretical values : — 
Theory. 
A 
6 equivs. of Carbon 
. 36 
13-68 
8 equivs. of Hydrogen 
8 
3-05 
1 equiv. of Nitrogen . 
. 14 
5-31 
3 equivs. of Chlorine . 
. 106-5 
40-46 
1 equiv. of Platinum . . 
. 98-7 
37-50 
1 equiv. of Platinum-salt . 
. 263-2 
100-00 
The same body is likewise formed by the action of ammonia upon the iodide of allyl. 
On distilling the product of this reaction with potassa, ammonia is disengaged ; but 
towards the end of the operation an alkaline liquid distils over, which no longer contains 
ammonia, and upon which there floats a small quantity of a basic oil. On saturating 
the aqueous solution, together with the oil, with hydrochloric acid, and adding bichloride 
of platinum, the platinum salt of allylamine separates either directly, if the solution he 
concentrated, or gradually, in magnificent gold-coloured needles, if the liquid be gently 
evaporated. 
0-183 grm. of the salt gave on ignition 0-0685 grm. =37-43 per cent, of platinum. 
Di allylamine. 
Impure allylamine, obtained either by the action of potassa on the cyanate, or of 
