120 P. T. Austen—Nitroparadibromaniline. 
glittering needles, or small prisms. From carbon disulphide it 
separates in the form of small, hard, white crystals. The com- 
und is insoluble in water, easily soluble in boiling absolute 
alcohol and glacial acetic acid, as well as in benzol, and acetic 
ether. It is slightly volatile in steam. Fuses at 159° to a 
transparent slightly yellow liquid. 
03034 grm. substance gave 00190 H?0 and 0-2452 CO:. 
O 
01749 erm. substance after the method of Carius gave 0°1998 
AgBr and 0°0027 Ag. 
Calculated for C*H®(NO*)*Br’, Found. 
‘ if. 
O 222508 wee 28 
HS 01 O68 25% 
Br=49°08 Paes 49°74 
Nitroparadibromaniline. 
In a preliminary notice* I mentioned that a dinitroparadi- 
brombenzol by treatment with ammonia formed a dinitrobrom- 
aniline, which under the influence of amylnitrite gave a dinitro- 
monobrombenzol. By repetition of the experiments, however, 
with much larger amounts and perfectly pure substances, I find 
that the reaction is different. 
By treating the a-dinitroparadibrombenzol with strong alco- 
holic ammonia the erystals take on a light straw yellow color. 
amount of nitrous acid. 
By repeated crystallizations from alcohol the substance was 
obtained pure. It forms orange, yellow, and red needles, which 
fuse at 75°, and are quite volatile with steam. It js very solu- 
ble in most solvents, with the exception of water in which it 
dissolves with difficulty. 
0:28 grm. substance, third crystallization, gave 0:0426H?0 and 
0°2536 CO:?. 
02092 grm. substance, fifth crystallization, gave, after the 
method of Carius, 0-2644 grm. AgBr and 0:0008 Ag. 
Calculated for C*H®Br°(NO°). NH?. Found. 
IL. 
C =24°32 2200 |... 
H. = 1°01 ig | ieee ee 
Br=54-05 54°06 
* Ber. d. d. chem. Ges., viii, 1183. 
