Circular 21 - Insecticides and Subsidiary Materials 73 
STA-WAY 
This is a proprietary compound contain' 
ing the active ingredients kno\.Ti chemically 
as diethylene glycol monobutyl ether acetate 
and diethylene-glycol monoethyl ether. It is 
used as a temporary but very effective repel- 
lent against mosquitoes by applying to the 
skin as with other preparations of this kind. 
It is manufactured by the National 
Carbon Company of Cleveland, Ohio, and sells 
for about 25 cents per 6-ounce bottle. See 
number 77 of list at end of this circular. 
SULFONATED CilSTOR OIL 
Sulfonated castor oil is one of the 
constituents of an ointment or smear contain- 
ing diphenylamine, benzene, and lamp black 
(knowTL as Formula #62 recently developed by 
the Bureau of Entomology and Plant Q,uarantine) 
v/hich is employed on animals as a screwworm 
killer and wound protector. 
Sulfonated castor oil, known also as 
turkey red oil, is one of the wetting and 
emulsifying agents used in the preparation of 
various insecticides. It is a viscous, trsins- 
parent liquid, and light yellow in color. 
Industrially, it is widely used in the dye 
industry. 
The oil comes in drums in carload lots 
with prices ranging from 7-3/4 cents per pound 
to 12 cents per pound depending upon the 
percentage of fat. 
For manufacturers and distributors see 
numbers 4, 10, 51, 53, and 100 of list at end 
of this circulcLT. 
