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Insecticide

Methidation

Chemical Name:  S-2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl-O,O-dimethyl phosphorodithioate

Formula:   C6H11N2O4PS3

Molecular Weight:  302.32

CAS No.: 950-37-8

Structure:
         
Description:
Appearance :  Colorless crystals,
Melting Point: 39-40 °C.
Flash Point: 100°C.
Density: 1.495 (20°C).
Vapour Pressure:  18.7 mPa(20°C).
Stability:  stable in neutral and weakly acid medium but much less stable in alkali.
 
Formulation:  40%EC
Toxicity: Toxicity class: III
Oral LD50(Rat): 44mg/kg, Dermal LD50(Rat): 640mg/kg.
Non-irritating to eyes, slightly irritating to skin.
Uses:
Insecticide and acaricide for the controls of alfalfa weevil and certain other insects in alfalfa, scales in citrus, spider mites, bollworm, budworm, lygus bug, pink bollworm, and whitefly in cotton. For use in sunflower, artichokes, apples, almonds, cherries, apricots, pears, nectarines, plums, prunes, walnuts, peaches pecans.

 

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