Affected by high temperature and rainy weather, many diseases and insect pests in China are in a serious trend. Phoxim is an organophosphate insecticide with low toxicity and is often used to control a variety of underground pests. Let us know more about Xixin. The characteristics of sulphur phosphorus. 1. Physical and chemical properties and preparations: The original drug is a light yellow oily liquid, hardly soluble in water, and easily soluble in various organic solvents such as alcohols, ketones and aromatic hydrocarbons. Slightly soluble in aliphatic hydrocarbons, slowly hydrolyzed in vegetable oils and mineral oils. Stable under neutral or acidic conditions; easy to decompose under alkaline conditions and high temperature, ultraviolet light. A common preparation is 50% phoxim emulsifiable concentrate. Phoximon has obvious synergistic effects on pyrethroids or organophosphorus, and many mixtures are formulated with various insecticides. 2. Toxicity: The toxic original drug is low in toxicity. The acute oral LD50 male is 2170 mg/kg in males and the female is 1976 mg/kg. The acute oral LD50 of male mice is 935 mg/kg. Acute percutaneous LD50 in male rats. It is 1000 mg/kg. 3. Function characteristics: High-efficiency and low-toxic organophosphorus pesticides, mainly in contact with stomach and stomach, no systemic action, broad spectrum of insecticides, strong knockdown force, very effective against lepidopteran larvae; used in the field, due to instability of light, It is quickly decomposed and invalidated, so the residual effect period is very short, and the residual risk is extremely small. The foliar spray generally has a residual effect period of 2-3 days. However, when the drug is applied to the soil, the residual effect period is very long, up to 1 to 2 months. It is suitable for controlling underground pests, especially for controlling peanuts, soybeans and wheat. It also has a good effect on a variety of lepidopteran pest larvae that harm peanuts, rice, cotton, corn, fruit trees, vegetables, mulberry, tea and other crops. It also has a certain killing effect on eggs, and is also suitable for controlling warehouses and sanitary pests. . 4, prevention and treatment objects and methods of use: Small ground tiger: It is sprayed with 50% phoxim emulsifiable concentrate 1200 times ground at the peak of 1st to 2nd instar larvae. 5. Precautions: The liquid should be used with the alkaline agent. It can be used in the concentration range of the drug. It has strong killing effect on the eggs, larvae and adults of the aphid's natural enemies. It should be noted. Symptoms of poisoning: acute poisoning usually occurs within 12 hours, and oral onset immediately. Mild: headache, dizziness, nausea, vomiting, excessive sweating, weakness, chest tightness, blurred vision, poor appetite, etc., the whole blood cholinesterase activity decreased to 70-50% of the normal value. Moderate: In addition to the above symptoms, mild dyspnea, muscle tremor, dilated pupils, mental paralysis, unstable walking, sweating, runny nose, abdominal pain, and diarrhea. In severe cases, there will be coma, convulsions, difficulty breathing, foaming at the mouth, incontinence, convulsions, and paralysis. 6. First aid method during poisoning: [1] subcutaneous or intravenous injection of atropine 1 ~ 5mg (depending on the severity of poisoning); [2] 0.4-1.2g intravenous injection with dephosphorization (depending on the severity of poisoning); [3] banned morphine, catechu, phenothiazine, reserpine; [4] accidental vomiting, gastric lavage, Catharsis (can induce vomiting when awake). Today About phoxim on here, pesticides want to get more knowledge, please pay attention to China Pesticide Network
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