Circular 21 - Insecticides and Subsidiary Materials 70 
For laariuf acturers and distributors of 
sodiuni arsenite see numbers 2, IS, 24, 59, 
6l, and 79 of list at end of this circular. 
S0DIU1.I B31TZ0ATE 
Benzoate of soda (C H Na) or sodium 
benzoate as comiuercially 7 5 2 obtained, is 
used in the preparation of some insect baits 
and poisons. ?or example, a combination of 
granulated sugar, crystallized tartaric acid, 
benzoate of soda, sodiuni arsenite, strained 
honey, and water is especially recommended as 
a poison bait for the Argentine ant. The ben- 
zoate of soda is added as a preservative to 
keep the solution from putrefying. 
Sodium benzoate is a metallo-organic 
compound obtained coimTiercially in the form of 
white, odorless granules or crystalline pow- 
der, possessing: a sv-eetish astringent taste. 
It is used in medicine as a mild external 
antiseptic. Industrially, it is important as 
a food preservative. 
Benzoate of soda is available in 
barrels at a cost of 39 to 43 cents per pound, 
For manufacturers and distributors see 
numbers 36, 37, 56, 75, 7o , 89, and 97 of 
list at end of this circular. 
