\ 
K | ee tT 33-6! 
September 1960 copay ARS-33-61 
UNITED STATES DEPARTMENT OF AGRICULTURE 
Agricultural Research Service 
A REVIEW OF LABORATORY TESTS ON THE TOXICITY OF SOME 
N-SUBSTITUTED p-BROMOBENZENESULFONAMIDES TO VARIOUS ARTHROPODS. 
“a “et MENT OF Rin 
By S. I. Gertler fs 
Entomology Research Division Lae joe 2 QU96C 

Ke RSENS 
pee fae 3 pram A 
Twenty-one N-substituted p-bromobenzenesulfonamides have been prepared 
and tested against 21 species of arthropods, and some have shown appreciable 
insecticidal activity. The results of these tests, which were conducted by 
various entomologists and former entomologists of this Division including 
E. C. Cushing, J. B. Gahan, W. A. Gersdorff, E. L. Mayer, E. Re McGovran, 
Re Melvin, N. Mitlin, P. G. Piquett, D. D. Questel, E. H. Siegler, M. C. 
Swingle, and A. P. Yerington, are given below. Some of the tests have been 
reported previously. 
U 
Preparation 
The compounds were prepared by reacting p-bromobenzenesulfonyl chloride 
with the appropriate amine or amino compound under suitable conditions. 
Most of them are colorless solids. These sulfonamides are listed in table l 
with index numbers, under which the entomological data are given in table 2. 
Test Methods 
The usual test procedures were followed and are described only briefly 
below or references are given. Compounds were finely ground and applied in 
suspension or solution as a spray or in a dust. Where exposure time is not 
mentioned, it will be found either in the reference cited or in the test 
results. 
American cockroach (Periplaneta americana (L.)).--Three-fourths-grown 
nymphs were dusted in a battery jar with 0.25 gram of the compound and con- 
fined for 3 days. 
Cabbage looper (Trichloplusia ni (Hbn. )).--Third instars were fed 
dusted or sprayed collard leaves. 
Codling moth (Carpocapsa pomonella (L.)).--Tests were conducted by the 
apple-plug method (5) on newly hatched larvae infested shortly after appli- 
cation. Each compound was sprayed at 4 pounds per 100 gallons. 
