Intelliffence and Miscellaneous Articles.. 349 



4(S»N) + 9(HO)+Aq=S-0=, N^ Aq + (2S='0^ H'U^^^^.o', 



This formula explains all the observed phaenomena, and its accu-i 

 racy is rendered unquestionable by the reaction of potash on the 

 sulphuret of nitrogen, which may be represented by fit pmii- •; -ia 



2(S2N) + 3(KO)+6(HO)=S'2 0% K0 + 2(S0S K6%2'('$iti^y: 



There are formed a hyposulphite and a sulphite in such propor- 

 tions that each of the two salts contains an equal quantity of sulphur. 

 These products are evidently due to two reactions ; to that of water 

 on the sulphuret of nitrogen, and that of potash on the trithionic 

 acid derived from the first reaction. It is well known that this 

 acid is resolved by the alkalies into sulphite and hyposulphite, — 

 2(S3 03) +5(KO) = S2 02 KO +480°- KO. 



ComptesRendus, Novembre 18, 1850. 



,, ,,. , ON THE CYANIC AMIDIDES. 



h»Y,MESSRS. L. CLOEZ AND CANNIZZARO. 



On bringing gaseous chloride of cyanogen and ammoniacal gas 

 into the presence of each other, M. Bineau obtained a solid com- 

 pound, to which he gave the name of chiorocyanate of ammonia, 

 representing its composition by the formula CyCl, 2(NH3). 



On attempting to form with the new bases of M. VVurtz and the 

 chloride of cyanogen the compounds corresponding to those of am- 

 monia, the results obtained were such as to lead us to re-examine 

 the compounds described by M. Bineau ; and we soon became con- 

 vinced that the chiorocyanate of ammonia was a mixture of the hy- 

 drochlorate of ammonia and a species of amide, which we have iso- 

 lated, and the composition of which may be represented, according 

 to our analyses, by one of the equivalent formulae — 



Cy, NHV xi.r:/-, Ni(SfWn/lau:.G^H8-m-,-r ^sarfl 



We have named this substance cyawamzae;.. -jth^,.^i^|]^mg|^n|i- 

 tion will exhibit its formation:— Vnni.li -■^atlTjvro- 



CyCH-2NH3 = NH^ HCl + Cy, NH% .J, ,,,,,, ,V; 



The best method oi' preparing cyanamide consists in paBsiilg-:a 

 current of perfectly dry chloride of cyanogen through a solution of 

 ammoniacal gas in anhydrous aether. Hydrochlorate of ammonia 

 is deposited, which is separated by filtration ; and on distilling the 

 aetherial solution in a water-bath, the residue consists of perfectly 

 pure cyanamide. 



Cj'anamidc is a white cry.stallizable substance, which melts at 

 104° F., but remains in the liquid .state at a fur lower temperature. 

 We retained a certain quantity of this substance in the liquid state 

 for twenty -four hours, in a room where the temperature was not 

 above 54-'^; but on touching the substance with a pointed piece of 

 glass, it instantly became solid. A.t about 302°, cyanamide exhi- 

 bits a very remarkable phopnomcnon ; it suddenly solidifies, with 

 disengagement of a largo quantity of heat. The composition of the 



