Some information about azamethiphos

September 18,2021



Molecular formula: CH12H19O2PS2


Molecular weight: 322.4


Density: 1.20 (20℃)


Melting point: -15℃


Boiling point: 125 (1 Pa) ℃


Properties: colorless oily liquid


Dissolution conditions: solubility water 0.31mg/L (20℃), isopropanol 400~600mg/L (20℃), dichloroethane, hexane, toluene greater than 1200g/L (20℃).


Usage: mainly used to control lepidopteran pests in cotton fields.


Preparation or source: prepared by condensation of 4-methylthiophenol and O, O-dimethyldithiophosphoryl chloride in the presence of acid binding agent.


Packaging, storage and transportation: Emulsifiable concentrates are packed according to GB3796 and GB4638. Store in a cool, dry and ventilated place, and not mix with feed, food, fertilizer and other items. If poisoned, treat it as organophosphorus pesticide poisoning.


Category: Insecticide


The temperature in winter is low, and most of the activities and hazards of pests and diseases are in a hidden and static state. When applying chemical pesticides in winter, in addition to choosing pesticides on the road, pay attention to the following five points.


First is to choose medication during sunny and high temperature periods. Because pests have more food intake and breathing intensity than cold weather when the temperature is high in winter, the liquid medicine is sprayed on the body of the pests, and more drugs are brought into the body, which is conducive to exerting a poisonous effect.


The second is to increase the amount of medicine appropriately. The pesticide lethal amount of pests is not constant. The lower the temperature at normal temperature, the lower the lethal dose of pests. Therefore, it is necessary to increase the dosage in winter to prevent pests from dying after taking medicine. Farmer friends can determine the dosage according to the temperature, but generally it does not exceed 50% of the conventional dosage.


The third is to select pesticides that are suitable for winter application. In general, stomach poisons and contact killers are less affected by temperature, and systemic agents and fumigants are more affected by temperature. However, pesticides such as deltamethrin, phoxim, and lime sulfur mixture can still exert better insecticidal effects when applied at lower temperatures. Therefore, you must wait patiently after applying the medicine. As long as the liquid is sprayed in place, there is generally no need for a new spray.


Fourth, we must extend the safety interval of crops. When pesticides are applied in winter, the degradation rate of pesticides slows down, and the residue recommendation period of pesticides in crops is relatively prolonged. When preventing and controlling vegetable crop pests and diseases in winter, special attention should be paid to extending the safety interval of pesticides to ensure human health.


Fifth, pay attention to the diluted medicine solution in each barrel. A small packet of 15 grams of "medicine primer" or "vegetable oil" agent, or acidic substances, can be added as an adhesive. However, do not use it when applying pesticides on vegetables.



It is well known that Azamethiphos is an effective veterinary medicine for preventing sea lice. Azamethiphos performs not collect in or on salmon, the product is broken down and also excreted by fish within 10 days of making use of. Fish treated are actually not gathered throughout this period. If you need salmosan azamethiphos, please contact us!


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