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COMMON NAME:Omethoate(80TC, 40 EC, 50SL)
CHEMICAL NAME:O, O-dimethyl S-methylcarbamoylmethyl phosphorothioate.
PHYSICAL AND CHEMICAL PROPERTIES:
Colorless to slightly yellowish oil, b.p. ca. 135¡ãC (decomposes when distilled); v.p. 2.5 ¡Á 10 -5 mm Hg at 20¡ãC; volatility at 20¡ãC, 0.29mg/m 3 ; d 20 1.32; n D 20 1.4987; readily soluble in water, alcohol and acetone; slightly soluble in ethyl ether; almost insoluble in petroleum ether. Stability to hydrolysis: half-life period, 611 hours at pH 7 and 24¡ãC. The velocity of decomposition of the active ingredient is essentially greater at higher temperatures or at Ph values 8-10.
TOXICOLOGY:
Acute oral LD 50 to rat is 30-60mg/kg, for mouse 30-40mg/kg; acute dermal LD 50 for rats is 1400mg/kg; Dreathing-in LD 50 for rat is 1520mg/kg 3 hour, TL...