498 On Compounds Isomeric with the Cyanuric Ethers. [June 16, 



nitrate. According as the substance dissolved in nitric acid or the silver 

 nitrate is in excess, we obtain the compounds — 



2C T H 12 N 4 0 0 , Ag N0 3 , 

 or C- H 12 N 4 0 2 , Ag N0 3 . 

 Both salts crystallize in needles ; the latter can be recrystallized from 

 boiling water without appreciable change, but the former is decomposed, 

 being converted into the second salt. 



Ethylic diamido-cyanurate. — White crystals were deposited from a 

 solution of the above-described but not fully purified compound, which 

 had been standing for a long time with concentrated solution of ammonia. 



These melted between 190° and 200°, and were much more difficultly 

 soluble in alcohol. Numbers were obtained by the analysis of these crys- 

 tals (carbon, hydrogen, and nitrogen determinations) which indicated it to 

 be the ethylic diamido-cyanurate, — 



1 C 2 H s O 



C,H.N,0=C,N,L H 2 N 

 J H 2 N 



This compound also, when dissolved in nitric acid, gives fine crystalline 

 needles on the addition of silver nitrate. These, however, have not yet 

 been analyzed. 



Experiments in the Amyl-series. 



Up to the present time we have only worked qualitatively in this series. 

 The product of the action of chloride of cyanogen on sodium amylate is 

 oily ; it distils at about 200°, but not, as it would appear, without being 

 thoroughly altered. The last portions of the distillate solidify to a mass 

 of white lustrous crystals, which can easily be obtained pure by solution 

 and recrystallization. We are inclined to consider this substance as 

 amylic cyan urate, but at present we have no numbers to confirm this 

 opinion. 



Experiments in the Phenyl- series. 



Lastly, we may here mention some experiments which were made in the 

 phenyl-series. Chloride of cyanogen acts with the same energy upon 

 sodium phenylate (which in this case was dissolved in absolute alcohol) as 

 on the other sodium compounds. The solution poured off from the common 

 salt which had separated gave, on the addition of water, an oil heavier than 

 water, which was submitted to distillation. What first came over was almost 

 pure phenol ; the distillation was interrupted as soon as a drop of the 

 residue solidified to a crystalline mass. The residue in the retort was then 

 mixed with cold alcohol, thrown on a filter and washed for some time with 

 the same liquid. The white crystalline mass thus obtained was then re- 

 crystallized from a very large quantity of boiling alcohol. "When the 

 solution was allowed to cool slowly, long thin needles separated which were 

 almost insoluble in alcohol and ether, but were found to dissolve, though 

 sparingly, in benzol. 



