I. Remsen on Nitroparasulphobenzoie Acid. 117 
toluic acid was the only product of the reaction. I was 
unable to discover a trace of any other acid, although special pre- 
cautions were taken to prevent errors of observation in this 
respect. The quantity of the product, too, was sufficient to 
warrant the conclusion that it was not formed by any secondary 
reaction. 
The results of this experiment then serve to strengthen the 
conclusion already drawn with reference to Meyer's reaction, 
o weaken the arguments of v. Richter. I shall next « 
attempt to convert orthosulphotoluenic acid into orthotoluic 
acid by the same method, though success is hardly to be antici- 
pated, as Meyer himself failed to convert chlorsalylic acid into 
the corresponding orthocarbonic acid, the substituting group 
being replaced by hydrogen instead of by carboxy 
Another experiment with which I have been occupied, closely 
allied to that described, has not yet led to decisive results. I 
stated, in the article already referred to, that having failed to 
obtain orthosulphobenzoie acid from orthosulphotoluenic acid by 
oxidation with potassic dichromate and peabans acid, | in- 
“ie prepared to assert this positively. W. Weith* has lately 
sown that orthotoluic acid may . rea 
ss 
a 
ES 
ry 
8. 
oo 
= 
a 
cod 
a) 
Bos 
® 
ct 
So 
ro) 
oe 
=| 
beg 
fe) 
m 
ro 
tS 
5 
o) 
= 
® 
Oo 
If. On Nitroparasulphobenzoic Acid. 
Th continuing my investigations on parasulphaminbenzoic 
acid, T a reached some new results which are herewith com- 
cated, 
* Berliner Berichte, vii Jahrgang, 1057. 
