r 



194 ] 



ON THE ACTION OF NITRIC A< Il» AND NITROUS ACID ON 



DIPHENYLAMINE. 



l'AUT I. 



Bi BUGS RYAN, D.Sc., and PHYLLIS RYAN M.Sc, 

 University Collie, Dublin. 



Heed Aran. 27. Published Decembkr 4, 1918. 



Many i imined tin- actions which occur between the 



oxyacide of i i ind diphenylamine, or its derivatives, in solutions which 



oth with respect to the acid and the amine. 



In the changes which occur during the life of a stabilised explosive the 



med to take place not only at the ordinary temperature, 



bat also at low concentrations of the amine and the acid. 



It w therefon rmine the nature of the com- 



nds formed by the action of various, but always l"\v concentrations of 



nitric acid on diphenylamine and diphenylnitrosamine under conditions 



approximatii . ssible i" those actually existing in a nitro- 



cellolose • 



< ». X. \\ (.'hem. Gee. viii (is::.), p. 855 ; >;/. Otto Fischer 



p. 174fi. by the action of Ditrous acid on a eld 

 I ition of diphenylamine, obtained diphenylnitroaamine, and by the 

 i nitric and nit: on i warm alcoholic solution of diphenyl- 



amine he obtained 4-nitro-diphenylnitrosamine (Ber. d. Dtscb. Chem. 

 Ges. xi (187 R. S lermer and Hofmann Ber. d. Dtech. Chem. 



Ges. xxxi 



P. Jnill ~ I im. Paris (3) xxxiii (1905), p. 1172-1190 . by 



the - i< .11 of nitric acid i>ii a rolution of diphenylnitrosamine in acetic 



aci'i I 4- :ui-l 2-nitro-diphenylnitrosaminea 



Witt ah Ges.xi 1878), p. 758) obtained a mixture 



. ^-lO-dinitro-diphenylnitatmamine by the action of nitric and 



niti the amine, while R. Stoeimer and ID -nu;!] I.) found 



that dilute nitric acid converts 4-nitro-diphenylnitro6amine into 410-dinitro- 



diphenylamii 



