370 A, Schlieper on the Oxydation of Uric Acid 
_ 2eq.allantoin C, N,H,O, 
2 “ oxygen = O, ~ 2 “carb. acidC, 
D water. is H 4 
leq. uricacid=C,,N,H, 0, 
2 2 
4 0 HO, 10 HyBay 
The excess of potassa served on the one part to hold in solu- 
tion the resulting allantoin, and on the other part, to accelerate 
the decomposition. 
I have not submitted the above mentioned red flocculent sub- 
stance, to a farther investigation; because the quantity of it was 
very small, and I did not sticceed in separating this body 
perfectly from prussiate of potash and allantoin; the reactions 
made with it show, nevertheless, that it is a new and certainly 
an interesting body. It has nearly the same solubility in cold 
and hot ‘water and alcohol, as allantoin, and it could be obtained 
only in small quantity washing the latter, and filtering off. This 
red substance gives to water and alcohol a rich orange color; is 
easily soluble in hot water, by which means the color changes 
however to light yellow, and in cooling, the watery solution 
deposits*a fine sulphur-yellow precipitate ; a great part remaitis 
however in solution. In potassa ley and ammonia, this red body 
is soluble with an orange color; but after addition of an acid, only 
“a’small portion of it separates with a light yellow color. In boil- 
ing the alkaline solution, Ammonia is formed, and acids added to 
the nearly colorless solution cause.no further precipitate. 
~ The quantity of the erystallized allantoin is very great, so 
that, if an easy mode of separating the red body adhering so 
obstinately to it, should be found out, this process would furnish 
transparent, prismatic crystals.” ) 
By this mode of purifying allantoin, a great part of it remains 
behind in the solution of acetate of potassa which cannot be ob- 
tained by evaporation ; on the contrary, a great quantity of ace- 
tate of ammonia goes off, indicating a new decomposition. The 
solution in acetate of potassa, filtrated from allantoin, was con- 
