OXIDATION OF SUCROSE BY POTASSIUM PERMANGANATE. 241 
Summary. 
1. The oxidation of sucrose by potassium permanganate 
proceeds in acid, neutral or alkaline solutions; manganese 
peroxide being separated in the last two cases and also in 
solutions of low acid concentration. 
2. The reaction involved is bi-molecular. 
3. The reaction does not proceed at a constant rate but 
gradually increases until the end point is reached. 
4, This increase in the velocity of reaction in any one 
experiment is due to the accelerative effect of manganese 
sulphate which is one of the products of reaction. 
5. Within certain limits the concentration of sulphuric 
acid does not afiect the nature of the reaction; but the 
(initial) velocity of reaction varies directly with the 
hydrogen ion concentration. 
6. Although glucose reacts with potassium permanganate 
more rapidly than does sucrose it is not formed in sufficient 
quantity to affect the velocity constants in the reaction 
studied. 
7. The temperature coefficient for 10° O. is about 3°0. 
In conclusion I wish to express my thanks to Professor 
O. E. Fawsitt for his advice in connection with this inves- 
tigation. 
P—July 1, 1914. 
