Insecticide Determination. I. Colorimetric Determination of Dimethyl 2, 2-Dichlorovinyl Phosphate (DDVP).

Abstract

A colorimetric method for the determination of dimethyl 2, 2-dichlorovinyl phosphate (DDVP) is described, which is based on the color complex formed between DDVP and acetone in the presence of ethanolic KOH. The absorption at 370mμ by the color reaction products follows Lambert-Beer's law. This method can be applied to Dibrom and Dipterex, the analogues of DDVP.