ON A NEW CLASS OF ALCOHOLS. 
565 
Capacity of balloon 292 cubic cent. 
Barometer 0“-762. 
Remaining air 0 
. • .- Weight of litre of vapour . . . ‘ 3'961 grms. 
Experimental density of vapour . ’ 3’045 
The weight represented by the formula Cg NOj, divided by the experimental den- 
83 
sity, furnishes the quotient g,^^^ = 27‘25. 
For a condensation to four volumes of vapour, the more accurate number 28*92 should 
have been found. Thus it is obvious that the condensation to four volumes observed 
for most organic substances, obtains also with cyanate of allyl, 
83 
The theoretical density of the vapour of cyanate of allyl is 28-92 ~2‘87. 
Allyl-urea. 
The formation of this substance has already been mentioned. On submitting a solu- 
tion of cyanate of allyl in ammonia to evaporation, a beautifully crystallized colourless 
substance is obtained which is soluble in water and alcohol. It contains 
CgHgN,0,=CeH„C,H3N,0„ 
and differs therefore from thiosinnamine only in having the sulphur of this substance 
replaced by an equivalent proportion of oxygen. 
This compound, which presents the properties of a true urea, and is prepared under 
conditions which determine the production of this class of compounds, furnished the 
following results on analysis : — 
I. 0*320 grm. of substance gave 0*561 grm. of carbonic acid and 0*234 grm, of water. 
II. 0*275 of substance gave 66 cub. cent, of nitrogen at the temperature of 17° and 
under a pressure of 0“*759. 
Theory. 
Experiment. 
r ^ 
I. II. 
8 equivs, of Carbon 
. . 48 
47*81 
8 equivs. of Hydrogen 
. . 8 
8*11 
2 equivs. of Nitrogen . 
2 equivs. of Oxygen 
1 equiv. of Allyl-urea . 
. . 28 
. . 16 
. . 100 
Ethyl-allyl-urea. 
27*86 
On treating cyanate of allyl by solution of ethylamine, instead of ammonia, a series 
of perfectly analogous phenomena is observed. On cooling the fluid solidifies into a 
crystalline mass which dissolves in alcohol, and separates from this solution, on evapora- 
tion, in the form of beautiful prisms similar to those of allyl-urea. This substance, 
which constitutes the ethyl-allyl-urea, yielded on analysis the following results: — 
4 E 
MDCCCLVII. 
