716 
ME. P. GEIESS ON A NEW SEEIES OF BODIES IN 
Nitrate of Diazonitranisol, 0 7 H 5 (N0 2 ) N 2 0, NH0 3 , 
is obtained from nitrate of nitranisol. It separates from an alcoholic solution on the 
addition of ether, forming small white plates, which are difficultly decomposed on 
heating with water, giving rise to the formation of a brownish-red substance. 
Perbromide of Diazonitranisol, G 7 H g (N0 2 ) N 2 0, HBr 3 , 
forms small yellow plates, which, on boiling with alcohol, furnish bromonitranisol 
(0 7 H 6 (N0 2 ) Br), crystallizing in light-yellow opake needles, which may be sublimed, 
and possess the odour of nitrobenzol. 
Diazonitranisolimide , 
(€ 7 H 5 (N0 2 )N 2 O)'') n 
H i : 
crystallizes in light-yellow needles, and possesses the odour of bitter almonds. 
Platinum-salt of the Hydrochlorate of Diazonitranisol , 0 7 II 5 (N0 2 ) N 2 0, HC1, Pt Cl 2 . 
When precipitated from a moderately concentrated solution, it forms a yellow powder, 
which under the microscope is found to consist of fine needles. Recrystallized from 
boiling water, it is obtained in orange-red, well-formed prisms. On heating with carbo- 
nate of sodium chloronitranisol (0 7 H 6 (N0 2 ) Cl 0) distils over, which crystallizes in fine, 
almost white needles. 
0*8795 grm. of the platinum-salt gave 0*222 grm. of platinum. 
0 7 H 5 (N0 2 ) N 2 0, HC1, Pt Cl 2 . 
Calculated. Found. 
Platinum .... 25*62 per cent. 25*24 
DIAZONAPHTOL COMPOUNDS. 
„ Nitrate of Diazonaphtol, 0 1O H 6 N 2 , NH0 3 , 
is prepared by the action of nitrous acid on moist nitrate of napthalidine (amido- 
naphtol); an amorphous reddish-brown substance* is formed at the same time, which 
must be separated by filtration when the reaction is over. As nitrate of diazonaphtol 
is not precipitated from its aqueous solution by alcohol and ether, it is not so easily 
obtained in a solid state as the corresponding bodies previously described ; if, however, 
its aqueous solution be allowed to evaporate spontaneously in a shallow vessel, long 
white needles are formed, which are very soluble in water and alcohol, and likewise 
very explosive. 
Perbromide of Diazonaphtol, 0 1O H 6 N 2 , HBr 3 , 
is obtained in the form of orange crystals by the action of bromine-water upon the crude 
solution of the nitrate. 
Platinum-salt of the Hydrochlorate of Diazonaphtol, 0 1O H 6 N 2 , HC1, PtCl 2 , 
forms truncated, yellowish crystals, which are almost insoluble in water, alcohol, and ether. 
* Probably impure nitrate of diazonaphtol-amidonaphtol. 
