564 
EESEAECHES OF DE. HOFlVIAArX AXD M. CAHOEES 
The benzoate of allyl furnished on analysis the following results ; — 
0-372 grm. of substance gave 0-997 grm. of carbonic acid and 0-209 gnn. of water. 
The formula 
C,oH,oO,=CeH„ C,H,0, 
requires — 
20 equivs. of Carbon . , . . 
10 equivs. of Hydrogen . . . 
4 equivs. of Oxygen . . . 
1 equiv. of Benzoate of allyl . 
Theory. 
Experiment. 
120 
74-07 
73-10 
10 
6-17 
6-24 
32 
19-76 
1^ 
100-00 
Cyanate of Allyl. 
Cyanate of silver is rapidly attacked even in the cold by iodide of allyl, the heat gene- 
rated by the reaction being sufficient to carry over nearly the whole of the product. 
By this means a colourless very hmpid liquid is obtained, boiling at 82°, possessing an 
extremely pungent odour, which, like that of cyanic ether, produces lacrymation in a high 
degree. When mixed with ammonia, this substance rapidly disappears, a gentle evolu- 
tion of heat being perceptible, and the solution furnishes on evaporation a magnificently 
crystallized body which is the allylic urea. Ethylamine behaves in a si mil ar manner 
with cyanate of allyl, and on evaporation beautiful prisms of ethyl-allyl-mea are obtained. 
When submitted to analysis cyanate of allyl furnished the following results : — 
I. 0-438 grm. of substance yielded 0-927 grm. of carbonic acid and 0-244 grm. of 
water. 
II. 0-335 grm. of substance gave 0-926 grm. of carbonic acid and 0-184 grm. of water. 
III. 0-381 grm. of substance gave 53 cub. cent, of nitrogen at the temperature of 
10° C. and a pressure of 0“-761. 
These results may be represented by the formula 
C,H,NO,=CeH3, C,NO,. 
Theory. Experiment. 
equivs. of Carbon 
48 
57-83 
r 
I. 
57-72 
A 
n. 
57-78 
equivs. of Hydrogen . 
5 
6-02 
6-18 
6-09 
equiv. of Nitrogen . 
14 
16-86 
equivs. of Oxygen 
16 
19-29 
equiv. of Cyanate of allyl 
83 
100-00 
We have controlled the preceding formula by a determination of the density of the 
vapour of cyanate of allyl. The following are the details of observation : — 
Temperature of the air 12° C. 
Temperature of vapour 152° C. 
Excess of weight of balloon filled with vapom*, over 
that of balloon filled with air 0-386 grm. 
