I. Remsen on Parasulphobenzoic Acid. 305 
0°4215 grams of the salt, on being heated to 240°, lost 0°0155 
grams HO; and then gave 0-2228 grams BaSO*=0°121 Ba. 
Calculated. Found. 
et ecw Getic minen fae | 
(C*H7808)2 342 68°80 
a 187 27°58 28°71 
H20 18 3°62 3°68 
497 100°00 
ingly probable that this easily soluble substance is nothing but 
the salt of orthosulphotoluenic acid. Acid barium sulphoben- 
zoate requires much less barium (23°10 per cent) and much 
As the neutral barium salt of parasulphobenzoic acid corre- 
this becomes still more probable. Be this as it may, it is evi- 
dent that the CH? group of orthosulphotoluenic acid has not 
een acted upon by the oxidizing mixture, nor has the acid 
pounds are destroyed by oxidizing agents requires qualifica- 
: pee 
the para-acid, if acted upon at all. This case agrees, however, 
by Fittig in the fact that the toluene- 
end, accompanied by an evolution of carbonic acid, without the 
further aid of heat. On now examining the mixture, not a 
*~ 
a 
