282 P. T. Austen— Nitro-derivatives of Diphenylamine. 



of picryl chloride was brought into solution in boiling absolute 

 alcohol. On continuing the boiling, a red crystalline powder 

 separated. 



Analysis.— The substance was purified by crystallization 

 from glacial acetic acid, dried at 100°, and analyzed. 

 0-2888 grms. of substance burned with lead chromate gave 



04354 grms. of GO 2 and 0-5920 grms. of H 2 0. 

 0-2852 ^grms. of substance gave V=49-8 c.c. [B=767mm. ; 



Solubility.— The solubility of this compound is nearly the 



same as the preceding one, being, in general, somewhat higher. 



In aqueous ammonia it is easily soluble to a red color. Acids 



iiged from this solution. From alcoholic 



ammonia it crystallizes in beautiful glittering leaves. 



It dissolves in a warm solution of sodium carbonate to a 

 scarlet-red color. On cooling, violet needles separate. This, 

 without doubt, is the sodium salt of the alphapicrylparanitrani- 



l C 6 H 4 (N0 3 )jt> 

 line, N {C«H«<NO')»«. The needles are soluble in alcohol 



(Na 

 and water, and are decomposed by acids. 



It is insoluble in an aqueous' solution of ammonium car- 

 bonate. Easily soluble in amyl alcohol, crystallizing therefrom 

 _. yellow scales. In aniline it dissolves 

 id separates on evaporation in a crystalline form. It 

 ute soluble in benzoyl chloride, acetyl chloride, ben- 

 le and chlorbenzol. ' 

 Properties.— In general this compound seems to possess more 

 ^properties than its isomer. The pure substance fuses at 



Dinitrophenylmetanitraniline. 

 dn^h m ^ n ;~ Calcl l lated amounts of dinitrobrombenzol (pro- 

 ™vSLw Y nitntion of brombenzol) and metanitraniline were 

 rubbed to a pap with absolute alcohol, and the mixture heated 

 nT^Tn r re at 10( ?7 D a closed tube - Tfa e reaction took 

 piace in tne most satisfactory manner 



On cooling, the tube contained hard brown crystals. They 

 were washed on a filter with warm alcohol until the filtrate 

 contained no trace of nitraniline chlorhydrate 



