Laboratory tests have been conducted to determine the possible corrosive effect of aqueous solutions of Dalapon sodium salt (sodium 2,2-dichloropropionate), a new grass killer, on the metals present in typical agricultural field sprayers. From preliminary study, it was concluded that solutions of the chemical could be used in agricultural field sprayers of standard construction with little effect on the materials of construction. In order to corroborate these findings, a standard production model agricultural field sprayer was obtained from the John Bean Division, Food Machinery and Chemical Corporation, for test purposes. The sprayer was operated for a period of four weeks using standard concentrations of Dalapon sodium salt in water and observations were made. From these data and from observation of the disassembled sprayer after testing, it is concluded that the chemical exhibited slight but not significant effect on the materials of construction.
The Determination of the Effect of A New Grass Killer on Application Equipment★
J. A. KELLY has been employed by the Dow Chemical Company, Midland, Mich., since 1946 serving as a research chemist and as a group leader in the Chemical Engineering Laboratory. His work has been in the field of agricultural chemical formulation research and development; his industrial experience also includes work in military explosives. Mr. Kelly is a 1942 graduate of Michigan State College and an active member of the American Chemical Society. His publications include several articles dealing with agricultural formulations and the effect of pesticides on equipment. He served as chairman of the symposium on "Mechanical and Engineering Aspects of Pesticide Application" sponsored by the American Chemical Society at Kansas City in March 1954.
W. J. FALKENSTEIN has been employed by The Dow Chemical Company, Midland, Mich., since 1936 in the Chemical Engineering Laboratory as senior laboratory technician and research chemist. His work has been in chemical process research and development, agricultural chemical production, agricultural chemical development and formulation research. Mr. Falkenstein is a graduate of East Technical School, Cleveland, Ohio, and a member of the American Chemical Society. His publications include an article on "The Effect of Pesticides on Application Equipment."
J. P. CARR is employed by John Bean Division, Food Machinery and Chemical Corp., Lansing, Mich., where he is concerned with the development of agricutural sprayers and specialized farm equipment. Mr. Carr was graduated from Purdue University in 1935; since that time he has been active in the field of research and development of mechanical equipment. His experience includes a World War II tour of duty in the Army Ordnance Department.
