标准化pyrethrins取粉

Standardized pyrethrins Extract powder. Botanical Source: Pyreyhrum cineriifoliun Trebr Preparation: pyrethrins is obtained from comminuted Pyreyhrum cineriifoliun flower by extraction with certain solvents. Appearance: Brown powder Content of main ingredients: The Extract contains not less than 50%of pyrthrins . Active compounds: pyrethrins , pyrethrins II, cinerin, cinerin II, jasmolin I, jasmolin I. Water: not more than 5.0% Total ash: not more than 5% Package: 25/KG per paper drum or packed with little parcel. Sample/ COA / MSDS are available Studies of the product: The natural pyrethrins are contact poisons which quickly penetrate the nerve system of the insect. A few minutes after application, the insect cannot move or fly away. But, a "knockdown dose" does not mean a killing dose. The natural pyrethrins are swiftly detoxified by enzymes in the insect. Thus, some pests will recover. To delay the enzyme action so a lethal dose is assured, organophosphates, carbamates, or synergists may be added to the pyrethrins. Semisynthetic derivatives of the chrysanthemumic acids have been developed as insecticides. These are called pyrethroids and tend to be more effective than natural pyrethrins while they are less toxic to mammals. One common synthetic pyrethroid is allethrin.Contact us to request more information.