THE DECOMPOSITION OF N1TROTOLU YLIC ACID. 
47 
mine the fact experimentally. Three or four grammes of the new substance were 
therefore distilled with caustic potash, and the solid product, after having been washed 
two or three times with water, was saturated with an alcoholic solution of oxalic acid. 
It was evaporated to dryness on the water-bath, then redissolved in boiling alcohol 
and filtered ; the crystals which separated on cooling were washed with cold distilled 
water, then redissolved in boiling water, and decomposed by caustic potash ; some 
clear oily drops separated, which were dissolved in ether, and the etherial solution 
evaporated to dryness. The residue was dissolved in hydrochloric acid, and mixed 
with an alcoholic solution of bichloride of platinum ; a fine orange-coloured crystal- 
line mass was obtained, which was washed with ether and dried on the water-bath. 
It was decomposed by ignition in a porcelain crucible. 
Analysis . — - 595 grm. yielded *1872 grm. of metallic platinum =3 T46 per cent. 
The formula of the double chloride of platinum and toluidine (C 14 H 9 N, HC1, PtCl 2 ) 
requires 3T6 per cent, of platinum. 
The crystalline body obtained by the distillation of the new substance with caustic 
potash was therefore evidently toluidine. 
The decomposition which nitrotoluylamide undergoes under the influence of hydro- 
sulphate of ammonia is in exact accordance with the reactions constantly observed 
between this reducing agent and nitrated organic bodies, and is represented in the 
following equation : — 
C^Inq | 0 2 , NH 2 + 6 HS=C 16 H 10 N 2 0 2 +4H0+6S. 
Nitrotoluylamide. New substance. 
The proportion per cent, of carbon and hydrogen required by the formula 
C 16 H 10 N 2 0 2 
are, 
Carbon 64’00 
Hydrogen .... 6*61 
which agree very closely with those obtained by the combustion of the new sub- 
stance with oxide of copper. 
This substance has two homologues in the benzoyl or immediately preceding series, 
viz. carbamide — carbanilide, a neutral body discovered by Dr. Hofmann*, and the 
true urea of the aniline series discovered by M. Chancel'I', both represented by the 
formula 
c 14 h 8 n 2 o 2 =c , 6 h 10 n 2 0 2 — C 2 h. 
The origin of the crystalline compound under examination, which is perfectly analo- 
gous to that of aniline urea, renders it at once probable that it is the analogue of the 
latter, an assumption which was fully corroborated by the study of its properties and 
chemical deportment. 
* Chem. Soc. Quart. Journ. vol. ii. p. 36. 
t Compt. Rend, xxviii. p. 293; Laurent and Gerhardt, C. R. 1849, p. 177; Joum. Pr. Chem, xlvii. 
p. 140; Ann. Ch. Pharm. lxxii. p. 274. 
