Carbofuran
【Chemical name 】 3,3-dihydro-2,2-dimethyl-7-benzofuranyl-n-methylcarbamate
【Molecular formula】 C12H15NO3
【Molecular weight 】 221.25
【Physicochemical properties】 the pure material was white crystalline, had no odor, MP 151-152 ° C, saturated vapor pressure 29.3 MPa (33 ° C), and relative density 1.180 g / ml. Its solubility is 700 mg / ml in water at 25 ℃, acetonitrile, acetone, dichloromethane, cyclohexanone, ethanol, dimethyl sulfoxide and many other organic solvents are difficult to dissolve in xylene and petroleum ether. Experience light fire, high thermal flammability. The toxic nitrogen oxide flue gas was evolved by thermal decomposition. Harmful combustion products are carbon monoxide, carbon dioxide, nitrogen oxide.
【Toxicity 】 acute transoral LD50 in rats ranges from 8 to 14 mg / kg. The LD50 of acute percutaneous toxicity in rabbits was greater than 10, 200 mg / kg. No irritant effect on eyes and skin. It is highly toxic to aquatic organisms such as fish and highly toxic to birds.
【Scope of application 】 as a broad-spectrum insecticidal nematicide. The greater accumulation of endog - enous conductance in leaves has a signi fi cant growth stimulating effect on rice and cotton, mainly in the control of aphids, planthoppers, leaf eating and drilling moth eaten pests of crops and nematodes.