Vol. IX, No. 3.] Action of Stannic Chloride. 133 
(NV .S.] 
(Persoz, Ann, Chem. Phy. 1830, (2) 44, 322) and Sn Cl, 
(NH), (Rose, Annalen, Ph. Chem., Pogg. 1832, 24, 163). 
It is very interesting that ammonia forms a stable com- 
pound with stannic chloride, whereas hydrazine, so similar to 
it, undergoes complete rupture. 
thing, however, can be inferred from the liberation of 
hydrochloric acid; according to the first method two mole- 
diazonium salt or not cannot be quite concluded and remains 
to be settled by further experiments. 
EXPERIMENTAL. 
In a litre distilling flask, 20 c.c of phenylhydrazine is 
poured; it is then fitted with a condenser and kep im- 
mersed in a large quantity of water. 15 c.c of redistilled 
being filled with dense white fumes. After the fumes have 
subsided the cold water is replaced by boiling water. It is so 
arranged that the whole of the flask is heated with steam. 
. a 
all of which distilled at 80° C. The gas evolved was found to 
be nitrogen. If the flask is not carefully cooled during the 
reaction, so much heat is disengaged that part of the phenyl- 
bydrazine undergoes decomposition according to Chattaway's 
(loc. cit.) equation,— 
2RHN.NH,=R.NH, +N, +NH;+RH. 
For the quantitative estimation # the evolved nitrogen 
the apparatus figured below has been designed. 
0-2 c.c of phenylhydrazine was placed in the flask mga hed 
of stannic cloride in the tap funnel. The temperature a e 
water bath surrounding the flask was 23° C, that of air being 
23°C. After adjusting the level, the reading of the burette 
contraction of the gas 
