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: C₂₂H₁₉C_l2NO₃
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