98 P. T. Austen — Dinitroparadibrornbenzols. 



violet mass was several times well washed with water, and then 

 dissolved in boiling absolute alcohol containing animal char- 

 coal, filtered, and allowed to crystallize. The substance forms 

 superb orange-red fine hairy needles fusing at 120°. They are 

 soluble in boiling glacial acetic acid and in alcohol. 



0-2885 grms. of substance gave 0-0684 grms. of H 2 and 

 0-4444 grms. of CO 2 . 



0-1685 grms. after the method of Carius gave 0-0910 grms. 

 of AgBr and 0"0016 grms. of Ag. 



Calculated from the formula — 



<: ; -ii^ 



C =42 

 H = 2 

 Br=23 



42-64 

 2-67 



The preceding 

 fuming nitric a 

 quickly with a v 



It dissolved 



23-56 

 irabromdinitroanilidobenzol. 

 compound was added in small portio 

 id at a temperature of +12°. 

 eak action, the color of the solu' 

 suiting solution was poured into cold water, 

 and the bright yellow powder which separated was crystallized 

 from boiling glacial acetic acid. The substance forms small 

 brownish yellow scales, which fuse at 167-5°. 



0-2057 grms. of substance after the method of Carius gave 

 0-0552 grms. of AgBr and 0-0035 grms. of Ag. 

 The formula — 



( "IP 



NO* 

 NO 2 

 NH.C«H 3 (N0 2 ) 2 



requires 18-69 Br ; 18-81 was found. 



The compound is easily soluble in boiling glacial acet 

 acid, but with difficulty in alcohol. If it be warmed with 

 solution of sodic hydrate, it f 

 red solution, from which, after 

 separation of glittering red an 

 place. This compound I take 1 

 dinitroanilidophenvlate — 



fNO 2 

 C«H 2 J ^° 8 



jediately a deep blood 



minutes have-elapsed, the 

 en dichroic needles takes 

 a sodium betadinitropara- 





y of Berlin, July 1! 



