JACKSON AND GAZZOLO. — TRICHLORBENZOL. 143 



I. 0.0906 gram of the substance gave by the method of Cariiis 0.2154 

 gram of argentic chloride. 

 II. 0.0702 gram of the substance gave 0.1862 gram of argentic 

 chloride. 



Calculated for Found. 



CcU-iClg. I. II. 



Chlorine 58.68 58.78 58.13 



Behavior of Trichloriodhenzol with Other Reagents. 



"With aniline even at its boiling point trichloriodhenzol showed no signs 

 of action, except that the color of the mixture became darker, and a 

 certain amount of turbidity appeared, but no test for an iodide could be 

 obtained, and the trichloriodhenzol was recovered" unaltered. 



When trichloriodhenzol was heated on the steam bath for three hours 

 with an aqueous solution of sodic hydrate, the liquid took on a chrome- 

 yellow color, but this must have been due to a very slight reaction, as 

 after acidification it gave no precipitate with argentic nitrate, and essen- 

 tially the whole of the trichloriodhenzol was recovered unaltered. 



Melted sodic hydrate, on the other hand, seemed to act upon it, as a 

 brownish mass was obtained, which after solution in water gave a slight 

 precipitate on acidification and a reddish solution ; a good test for an 

 iodide was obtained, but the yield of the new organic substance was so 

 small that we did not study this reaction further, since at best it seemed 

 to us of slight interest. 



Sodium malonic ester had little or no action on the trichloriodhenzol, 

 most of which was recovered unaltered from the product, so that the 

 hope of obtaining enough of a substance (if one were really formed) for 

 analysis was so small that we did not continue work in this line. 



From these experiments it appears that the trichloriodhenzol is no 

 more reactive than the tribromiodbenzol, from which exactly similar re- 

 sults were obtained by Sidney Calvert and one of us.* 



Wlien trichloriodhenzol was mixed with nitric acid of specific gravity 

 1.50 and strong sulphuric acid, and the mixture gently heated, the solid 

 went into solution. It was allowed to stand at ordinary temperatures 

 over night, and then precipitated with a large quantity of water, when 

 a mixture of a white body and scales of iodine was thrown down. The 

 iodine was recognized by its crystalline form, color, smell, and purple 

 fumes. The white body was purified by crystallization from alcohol, 



* These Proceedings, XXXI. 128. 



