ON A NEW CLASS OE ALCOHOLS. 
567 
obtained crystallized by evaporation. This substance is always a mixture, of which the 
quality and quantity of the constituents are variable. The action of potassa on it always 
produces a base which is readily soluble in water, but also basic oils insoluble in water, 
the boiling-point of which rises as high as 180° C. Simple distillation of the liberated 
bases appears to give rise to decomposition, and thus to induce further complication. 
W e have not succeeded in ascertaining with perfect precision the nature of this mixture, 
but we have found that it invariably contains a considerable quantity of a base which 
bears the same relation to allylic alcohol that is observed between ethylamine and 
ordinary alcohol. The formation of this substance, which we propose to designate 
allylamine, is perfectly analogous to the production of ethylamine by means of cyanate 
of ethyl, 
C6H5N0,+2(K0, H 0 )= 2 KC 03 +C,H 7 N 
Cyanate of Ethylamine. 
ethyl. 
CsH3N03+2(K0, H 0 )= 2 KC 03 -fC 6 H 7 N 
Cyanate of Allylamine. 
allyl. 
But, as we have already said, the decomposition of the cyanate of allyl is far from pre- 
senting the same definite character as that of the corresponding compound of the ethyl- 
series. 
Since it was impossible to separate the mixtui’e of bases by a fractional distillation, 
we have determined the composition of allylamine by the analysis of the platinum-salt. 
Allylamine. 
On adding a solution of bichloride of platinum to the hydrochloric solution of the 
bases resulting from the action of potassa upon cyanate of allyl, there is produced almost 
invariably a pale yellow precipitate; and the solution filtered off from this precipitate 
deposits on evaporation a magnificent salt, crystallizing in brilliant orange-coloured 
needles. The pale precipitate * varies in quantity and composition ; but the second salt 
♦ This precipitate appears to be a mixture m variable proportions of the platinum-salts of ammonia and 
methylamine. The following are some determinations of the platinum in this precipitate : — 
I. 0'3405 grm. of the platinum-salt gave 0T483 grm. of platinum. 
II. 0'26375 grm. of the platinum-salt gave O'llSO grm. of platinum. 
III. 0‘2945 grm. of the platinum-salt gave 0T250 grm. of platinum. 
IV. 0'321 grm. of the platinum-salt gave 0T357 grm. of platinum. 
V. 0'334<5 grm. of the platinum-salt gave 0'1412 grm. of platinum. 
VI. 0'2205 grm. of the platinum-salt gave 0‘0927 grm. of platinum. 
VII. 0'297 grm. of the platinmn-salt gave 0T24 grm. of platinum. 
Percentages. 
I. II. III. IV. V. VI. VII. 
43-61 43-6 42-44 4227 4221 42-06 41-75 
The platinum-salt of ammonium contains 44-22 per cent, of platinum, and that of methylammonium 41-68. 
4 E 2 
