Pendimethalin

Pure orange-yellow crystalline solid with light nut or fruit flavor. Melting point 54~58 ℃, boiling point 330 ℃ decomposition, vapor pressure 4 mPa (25 ℃), Henry's constant 2.728 Pa - m3 /mol (25 ℃), octanol / water partition coefficient 5.181 8, adsorption coefficient 5 000, density 1.17 g/cm3, pKa 2.8. solubility: water 0.33 mg / L (pH 7, 20 ℃), acetone, xylene and dichloromethane 800, hexane 48.89 g/L (20 ℃); slightly soluble in corn oil, isopropanol, hexane 48.89 g/L (20 ℃); slightly soluble in corn oil, isopropanol, hexane 48.89 g/L (20 ℃). Solubility: water 0.33 mg/L (pH 7, 20 ℃); acetone, xylene and dichloromethane 800, hexane 48.89 g/L (20 ℃); slightly soluble in corn oil, isopropanol, heptane, benzene, toluene and trichloromethane; insoluble in petroleum ether and gasoline. 5~130 ℃ the following storage is very stable. Stable in acid and alkali. Slowly decompose when exposed to light, half-life in water <21 d. Non-corrosive. Non-flammable, non-explosive.

Selective herbicide, control of annual grasses and certain annual broadleaf weeds.Apply pre-seedling after sowing in cereals, corn and rice, or in a shallow soil mix before sprouting in snap beans, cotton, peanuts and soybeans. It can be applied pre-seedling or before transplanting in vegetable fields, and can also be used to prevent tobacco suckers.