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Methidathion |
| Common name |
Methidathion |
| Chemical name |
S-2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl
O,O-dimethyl phosphorodithioate |
| Structure |
 |
| Molecular formula |
C4H7Br2Cl2O4P |
| Molecular weight |
381 |
| CAS# |
950-37-8 |
| Toxicology |
Rat acete oral LD50 44mg/kg,
acute dermal LD50 640mg/kg. Non-irritating to
eyes; slightly irritating to skin. |
| Properties |
Colorless crystals. mp 39-40¡æ,
density 1.495g/cm3 (20¡æ), vapor pressure 0.186mPa
(20¡æ). Solubility (20¡æ): water, 250mg/L; very soluble
in acetone, benzene and methanol. Stable under neutral
and weak acidic condition. |
| Use |
Insecticide. Protects fruits,
cotton and vegetables agains mites and scale pests.
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| Specification |
95% Methidathion
40% Methidathion emulsifiable concentrate (w/w) |
| Packaging |
95% Methidathion: plastic barrel.
40% Methidathion E.C.: plastic lined iron barrel. |
| Storage |
Seal tight. Avoid moisture. |
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