200 DR T. ANDERSON ON SOME OF THE 
tine was separated by precipitation with ammonia. Nitrate of nitropapaverine is 
anhydrous. Its analysis gave these results :— 
5-497 grains nitrate of nitropapaverine gave — 
10-820 ... carbonic acid, and 
2-450 .., water. 
Experiment. Calculation. 
Carbon, . < é 53°68 53°69 C,, 240 
Hydrogen, = 3 4:95 4:69 of 21 
Nitrogen, : ; i 9°38 N, 42 
Oxygen, . : : pad 32:24 0,, 144 
100-00 447 
corresponding with the formula 
C,, H,, (NO,) O, + HO NO,. 
Hydrochlorate of Nitropapaverine—is a sparingly soluble salt, crystallizing 
in pale yellow needles. It dissolves readily in spirit, and in excess of hydro- 
chloric acid. ‘ 
Sulphate of Nitropapaverine—is but little soluble in water; it crystallizes in 
minute prisms. 
Platino-Chloride of Nitropapaverine—is thrown down as a pale yellow preci- 
pitate, when bichloride of platinum is added to a solution of the hydrochlorate. 
Its analysis gave the following results,— 
5°555 grains, dricd at 212°, gave 
8-245 ... carbonic acid, and 
1:900 ... water. 
5-579 grains, dried at 212°, gave 
0:924 ... of platinum. 
Experiment. Calculation. 
Carbon, . . F 40°47 40:66 C,, 240 
Hydrogen, 0 5 3°80 3°55 Hy, 21 
Nitrogen, ; ’ a, 4:72 N, 28 
Oxygen, . 3 : ave 16-26 0,, 96 
Chlorine, . 3 5 es 18-09 Cl, 106-5 
Platinum, 5 3 16°56 16:72 Pi 98-7 
100-00 590-2 
corresponding completely with the formula 
C,, H,, (NO,) 0, HCl + PtCl. 
The rest of the salts of nitropapaverine have not been minutely examined. 
Action of Bromine on Papaverine. 
When bromine water is added, drop by drop, to a solution of hydrochlorate of 
papaverine, a precipitate is obtained which at first immediately redissolves, but 
on the further addition of bromine water, at length becomes permanent. It is 
the hydrobromate of a derivative base, bromopapaverine. 
