<progress id="62ov7"><code id="62ov7"></code></progress>

    <optgroup id="62ov7"><li id="62ov7"><dfn id="62ov7"></dfn></li></optgroup>

        <ruby id="62ov7"><li id="62ov7"></li></ruby>

          Products

          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

          乱女乱妇熟女熟妇综合网站|秋霞午夜理论理论福利无码|亚洲综合偷拍日韩一区福利姬|92国产精品午夜福利无毒不卡

          <progress id="62ov7"><code id="62ov7"></code></progress>

            <optgroup id="62ov7"><li id="62ov7"><dfn id="62ov7"></dfn></li></optgroup>

                <ruby id="62ov7"><li id="62ov7"></li></ruby>