722 
ME. P. GrEIESS ON A NEW SEEIES OE BODIES IN 
0*2693 grm. gave 0*7233 grin, of carbonic acid and 0*1315 grm. of water. 
These numbers correspond to the above formula, G 24 H 20 N 6 . 
Calculated. 
Pound. 
S 2 4 
288 
73*47' 
73*24 
H 20 
20 
5*10 
5*42 
n 6 
84 
21*43 
— 
392 
100*00 
The formation of this new substance can be expressed as follows : 
Nitrate of tetrazo- Aniline. Tetrazodiphenyl- Nitrate of aniline, 
diphenyl. amidobenzol. 
Tetrazodiphenyl-amidobenzol is insoluble in water, and, although very little soluble 
even in boiling alcohol and ether, can be recrystallized from them. By this means 
lance-shaped crystals are obtained, which are generally grouped together in a star-like 
form. When heated they explode ; boiled with mineral acids they are decomposed 
with evolution of nitrogen gas. 
Dijphenylimide , |n 2 . 
This body is obtained in crystals when the perbromide is acted upon by solution of 
ammonia. The crystals are purified by repeated recrystallization from strong alcohol, 
when they are obtained in small very brilliant white, or slightly yellowish plates, inso- 
luble in water, very difficultly soluble in cold alcohol, and only moderately soluble in 
ether. Boiling alcohol, however, dissolves them very readily, and yields on cooling a 
mass of crystals. The compound fuses at 127° C. to a yellow oil, which is decomposed 
at a higher temperature, giving rise to slight explosions. It does not combine with 
acids or alkalies, and is perfectly neutral to test-paper. No change is produced even by 
boiling with concentrated hydrochloric acid, nor with aqueous or alcoholic potash. It 
is decomposed, however, by nitric or strong sulphuric acid. 
I. 0*2503 grm. of substance gave 0*5577 grm. of carbonic acid and 0*0816 grm. of 
water. 
II. 0*3118 grm. gave 0*6918 grm. of carbonic acid and 0*0983 grm of water. 
Calculated. 
Pound. 
A 
r 
' l. 
II.' 
^12 
144 
61*02 
60*76 
60*51 
H 8 
8 
3*39 
3*62 
3*50 
n 6 
84 
236 
35*59 
100*00 
— 
— 
