Analysis of the miticide fenbutation oxide by infrared spectrophotometry

Abstract

The miticide fenbutatin oxide is used in Brazil lo control pseudo rust in citrus. Phyllocoptruta oleivora is the mite responsible for this disease. The miticide is determined by nonaqueous titration, liquid chromatography and infrared spectrophotometry. The first method is not specific, the second very onerous for developing countries and the third is also not specific because the employed absorption is due to the phenyl radical, common to organotin fungicides. In this research a new method is developed by infrared spectrophotometry that is very specific because the choosed absorptions correspond to the propyl radical and the oxide/ether bond. These absorptions are typical of the fenbutatin oxide.