i 
f 
[ 
' 
p 
Chemistry and Physics. . 113 
portion of acetic ether. In like manner benzoic acid at 240° produces 
the decomposition of acetic ether, traces of benzoic ether being formed 
at the same time. From this it appears that the acid which produces 
the decomposition may itself enter into combination with the alcohol; 
the phenomenon is then the replacement of one acid by another. This 
replacement is particularly well marked with fuming chlorhydrie acid. 
In 106 hours at 100° this body produces the decomposition of acetic, 
butyric, benzoic and stearic ethers, the acids being set at liberty and 
chlorid of ethyl formed. The analogy between the double decomposi- 
tions thus produced and the examples furnished by inorganic chemistry 
is sufficiently obvious. —Ann. de Chimie et de Physique, xli, 432, Au- 
gust, 1854. 
On the cyanic and cyanuric ethers and on the amids.—Wortz 
has published an elaborate and most interesting memoir on this subject, 
from which we shall extract those results which appear most striking 
and important. Cyanic ether brought in contact with water yields car- 
bonic acid and diethyl-urea: the reaction is represented by-the equa- 
tion 2C6HsNO2-+-2HO = CioHi2N202 + 2CO2z. Water of ammonia 
dissolves cyanic ether with disengagement of heat and formation of 
ethyl-urea, Thus CeHsNO2-+ NH3= CeHsN202. The compound 
ammonias exert a similar action, which the author proposes to consider 
In a separate memoir. ydrate of potash and cyanic ether yield car- 
bonate of potash and ethylamin, thus CoHsNO2+2KO, HO=2KO, CO2 
+-CsHiN. Alcohol and cyanic ether yield ethylurethane, CioHiiNOs, 
which with caustic potash yields carbonate of potash, ethylamin and 
alcohol, a decomposition exactly analogous to that of ordinary urethane. 
With sulphuric acid ethylurethane gives ethylamin and sulphovinic 
acid : in its pure state it is an oily liquid boiling between 174° and 175° 
Cyanic ether and acetic acid react readily at ordinary tempera- 
tures, carbonic acid is disengaged and ethylacetamid is formed: the 
feaction is represented by the equation 
CaHs ' 
CiHs01-+CcoHsNO2=2CO2+N ? CiH3O2. Caustic potash decomposes 
ethylacetamid into ethylamin and acetate of potash. It is obvious 
that ethyl acetamid may be regarded as ammonia in which one equiva- 
lent of hydrogen is replaced by one of ethyl! and a second equivalent of 
hydrogen by one of acetoxy| CaHsO2z, With anhydrous acetic acid, 
: (CaHs 
cyanic ether yields ethyldiacetamid, N { CsH302, in which all three 
sO 
equivalents of hydrogen are replaced by other radicals. a oom 
2 
and cyanic ether give carbonic acid and ethylformiamid, N lg 
Wurtz has found in like manner that cyanic ether attacks a great num- 
ber of acids, the products being amids, the constitution of which may 
easily be foreseen. 
he constitution of cyanuric ether is represented by the formula 
CisHisNaQs,. or it is isomeric with cyanic ether ; it is a colorless crys- 
talline body fusing at 95° C. The author believes that there are how- 
Szconp Szars, Vol XIX, No, 55.—Jan,, 1855. 
