IUPAC Name: 4-dimethoxyphosphinothioyloxy-N,N-diethyl-6-methylpyrimidin-2-amine

Source: Used as a pesticide on a wide range of crops.

Summary: Pirimiphos-methyl is a thiophosphate that is used as a pesticide. Upon distillation will decompose to produce toxic fumes of sulfur, phosphorus, and nitrogen oxides. It is soluble in water up to 5 mg/L at 30 C and has a density of 1.17 g/mL at 20 C. As an acid, the compound has a pKa value of 4.30. A Koc value in the range of 950 – 8500 predicts it will have low mobility in soil. The compound does not absorb some of the wavelengths of UV light, so photolysis is not expected to be a major factor in removal. It is expected that bioaccumulation in aquatic organisms will be high.

GHS Hazard Statement: H302, H312, H315, H319, H361, H370, H372, H400, H410, GHS07, GHS08, GHS09