MOLECULAR CONSTITUTION OF THE ORGANIC BASES. 
385 
Action of Bromide of Amyl upon Amylamine. 
Diamylamine. 
The formation of diamylamine takes place even in the cold, although slowly. At 
the temperature of boiling water, a mixture of amylamine and bromide of amyl is 
rapidly converted into a beautiful white crystalline mass of hydrobromate of diamy- 
lamine, which is purified, and decomposed in the usual manner. When purified, 
diamylamine is a light oily substance, very little soluble in water, to which it imparts, 
however, an alkaline reaction. Its aromatic odour is peculiar, not unpleasant, and 
reminds us of amylamine; its taste hot and pungent; it boils at about 170°. From 
want of pure material, the boiling-point could not be determined with accuracy. 
Diamylamine forms very beautiful crystalline salts with the acids, which are all 
rather insoluble in water. The hydrochlorate is almost insoluble in cold water, but 
may be recrystallized from boiling water. This solution yields with bichloride of 
platinum a double salt, which is rather soluble, and separates frequently, in the first 
instance, in the form of oily drops, which become gradually crystalline. 
It was by the analysis of these two salts that the composition of diamylamine was 
fixed. 
0‘2545 grm. of hydrochlorate gave 0*1852 grm. of chloride of silver. 
The formula 
C20 H 23 N,HC 1 = 
requires the following values : — 
1 equiv. of Diamylamine 
1 equiv. of Hydrochloric Acid . . . 
N, HCl 
Theory. 
, , 
157*0 81*14 
36*5 18*86 
1 equiv. of Hydrochlorate of Diamylamine . 193*5 100*00 
Experiment. 
18*51 
These numbers show that the hydrochlorate employed was not perfectly pure ; 
however, the two following platinum-salts leave no doubt respecting the base under 
examination. 
I. 0*1634 grm. of platinum-salt gave 0*0444 grm. of platinum. 
II. 0*1805 grm. of platinum-salt gave 0*0488 grm. of platinum. 
Percentage. 
( ^ 
I. 11, 
Platinum 27*17 27*04 
The following theoretical values correspond to the formula 
C20 H23 N, H Cl, Pt Cl2=|cio HiJn, H CI, Pt CI2. 
lc,o hJ 
