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Dimefluthrin


CAS Number:

40487-42-1

  • Product description

    The pure product is an orange-yellow crystalline solid with a subtle nutty or fruity aroma. It has a melting point of 54–58°C and begins to decompose at its boiling point of 330°C. Its vapor pressure is 4 mPa (25°C), and its Henry’s law constant is 2.728 Pa·m³/mol (25°C). The compound exhibits an octanol/water partition coefficient of 5.1818 and an adsorption coefficient of 5,000. Its density is 1.17 g/cm³, and its pKa value is 2.8. Solubility data: It dissolves very slightly in water—0.33 mg/L at pH 7 and 20°C—while showing much higher solubility in organic solvents such as acetone, xylene, and dichloromethane (800 g/L each at 20°C). It is also sparingly soluble in corn oil, isopropanol, heptane, benzene, toluene, and chloroform, but remains practically insoluble in petroleum ether and gasoline. The compound remains highly stable when stored below 5–130°C. It is stable under both acidic and alkaline conditions. However, exposure to light causes slow decomposition, with a half-life of less than 21 days in water. Importantly, it is non-corrosive, non-flammable, and non-explosive.

     

    Selective herbicide for controlling annual grassy weeds and certain annual broadleaf weeds. Apply pre-emergence after sowing cereal crops, corn, and rice, or incorporate it lightly into the soil before emergence of broad beans, cotton, peanuts, and soybeans. In vegetable fields, it can be applied either pre-emergence or just before transplanting, and is also effective against tobacco sucker growth.

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