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    Alpha-cypermethrin

    Generic name: Alpha-cypermethrin
    Alias: α-Cypermethrin; alphametrin; bestox
    Chemical name:
    (1) 2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropanecarboxylate-α-cyano-(3-phenoxy)-benzylester
    (2) cyano-3-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylate
    Molecular formula: C22H19Cl2NO3
    Molecular weight: 416.3
    CAS RN: 67375-30-8 
    Physical and chemical properties:
    Appearance: White crystalline solid
    Assay: 97%
    Relative density: 1.12
    Vapour pressure: 23×10-2mPa/20°C
    Melting point: 75-81°C
    Flashing point: ≥80°C
    Solubility: Extremely low solubility in water, well soluble in ketones, alcohols, aromatics and other organic solvents.
    Stability: Stable in neutral and weak acid condition. Hydrolyze in strong alkali. Stable to light and heat.
    Acute toxicity: Rat percutaneous LD50: 500mg/kg; Rat per os LD50: 60 ~ 80mg/kg
    Chronic toxicity: No effect dose on rat is 60ppm.
    Application: Alpha-cypermethrin is a highly effective pyrethroid with 2 isomers. Cypermethrin has 8 isomers. The efficacy of alpha-cypermethrin is 2-3 times of cypermethrin with broad-spectrum. The dosage on crop pest is only 7-30 (g a.i/ha). This product has strong tag out and stomach toxicity effect and is mainly used to protect cotton, fruit tree, vegetable, flower and grain.
    Packing: 25kg/drum, 50kg/drum

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