A brief analysis of the insecticide cypermethrin
What is cypermethrin (52315-07-8)?The chemical formula of the pesticide cypermethrin is (RS)-α-cyano-3-phenoxybenzyl (SR)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic Acid ester, Cas 52315-07-8 is an organic compound with the chemical formula C22H19Cl2NO3. It is a broad-spectrum insecticide used to control pests in crops such as cotton, rice, corn, and soybeans, as well as fruit trees and vegetables.
The insecticide cypermethrin is a large class of pesticides that are artificially synthesized after organochlorines, organophosphorus and carbamates and have excellent biological activity and good environmental compatibility. They are also a class of pyrethroid insecticides that have been widely used in recent years. agent.
The industrial product of insecticide cypermethrin is a yellow to brown viscous solid and becomes a viscous liquid at 60°C. It is stable to light and loses weight slowly when the temperature is greater than 220°C. It is stable under weak acid and neutral conditions and decomposes when exposed to alkali. The hydrolysis half-life is 1 day. The drug has a long residual effect and is safe for crops when used correctly. It can be used to control many hygienic pests such as flies, cockroaches, mosquitoes, fleas, lice and bedbugs in public places. It can also be used to control external parasites in livestock: ticks, mites, etc. In agriculture, it is mainly used to control Coleoptera, Lepidoptera, Orthoptera, Diptera, Pests such as Hemiptera and Homoptera.
Cypermethrin (52315-07-8) Properties
The original pesticide cypermethrin is a light yellow to brown viscous liquid or semi-solid. The refractive index is n25D1.5650, the vapor pressure is 5.066×10-6Pa (70℃), 190×10-9Pa (extrapolated to 20℃), and the relative density is about 1.2350 (25℃). The solubility at 20℃ is: acetone>450gChemicalbook/L, ethanol 337g/L, xylene>450g/L, chloroform>450g/L, hexane 103g/L; the solubility of the original drug in water is 0.01~0.2mg/L (21℃ ). It is stable to heat and does not decompose below 220°C. It is relatively stable in acidic media. It is stable to light and unstable in alkaline conditions in field tests.
Pharmacological effects of cypermethrin (52315-07-8)
The pesticide cypermethrin is a third-generation pyrethroid insecticide. It is mainly used for the prevention and control of agricultural and forestry pests such as field crops, cash crops, vegetables, and fruit trees, as well as household hygiene pests such as vegetables, mosquitoes, and bedbugs. It is highly effective and widely used. Spectrum, low toxicity to humans and animals, rapid action, long-lasting effect, etc. It has contact and stomach poisoning, egg killing, and antifeedant activity against pests, but it has no systemic effect. It is resistant to rain erosion and is particularly effective against pests that have become resistant to organophosphorus pesticides.
Cypermethrin (52315-07-8) mechanism of action
The pesticide cypermethrin is a moderately toxic pesticide that acts on the nervous system of insects. It disrupts the nervous function of insects by interacting with sodium channels. It has contact and stomach poisoning effects and is non-systemic. It has a wide insecticidal spectrum, rapid efficacy, is stable to light and heat, and has a killing effect on the eggs of certain pests. This drug has a good effect on controlling pests that are resistant to organophosphorus, but has a poor effect on mites and lygus bugs.
The insecticide cypermethrin acts on the nervous system of insects, interfering with nervous system function by blocking sodium ion channels. The insecticide methods are contact killing and gastric killing, and it also has an antifeedant effect. Degradants also have good activity on treated crops. It has a wide insecticidal spectrum, rapid efficacy, is stable to light and heat, and has a killing effect on the eggs of certain pests. The use of cypermethrin is effective in controlling pests that are resistant to organophosphorus, but is less effective in controlling mites and bug bugs. The drug has a long residual effect and is safe for crops when used correctly.
Cypermethrin (52315-07-8) target crops
The insecticide cypermethrin has a wide range of applications, especially for the control of fruits (grapes), vegetables (potatoes, cucumbers, lettuce, peppers, tomatoes), grains (corn, soybeans), cotton, coffee, ornamental plants, trees and other crops Lepidoptera, Coleoptera, Diptera, Hemiptera and other pests. Also used to control mosquitoes, cockroaches, houseflies and other public health pests. It can also be used as an in vitro pesticide for animals to control beetles, aphids, and lepidopteran pests on cotton, fruits, vegetables and other field crops as well as ornamental plants. This product is also used in forestry and public health applications. Cypermethrin has a good effect on phosphoptera larvae and good control effect on homoptera, hemiptera and other pests, but it is ineffective against mites. It is suitable for crops such as cotton, fruit trees, tea trees, soybeans, sugar beets and so on.
Cypermethrin (52315-07-8) Advantages
(1) High efficiency: The insecticide cypermethrin has high gastric toxicity and contact killing effects on insects. It has strong selective toxicity and long-lasting effect. Once it comes into contact with pests, it immediately acts on the central nervous system, causing them to rapidly die;
(2) Environmental stability: Compared with other pyrethroid insecticides, the insecticide cypermethrin is not easily degraded by light and air;
(3) Repellency: The insecticide cypermethrin is a low-toxic and powerful repellent that is not absorbed and conducted in plants. It is widely used in the prevention and control of agricultural pests, sanitary pests, livestock pests, stored grain pests, etc.;
(4) Activation effect: The insecticide cypermethrin has a stronger activating effect than other insecticides. It can drive pests in caves to crawl out and come into contact with the insecticide.
Cypermethrin (52315-07-8) Risks
The insecticide cypermethrin has obvious toxic side effects on mammalian reproduction, immunity, and nerves. Cypermethrin can also be harmful to human health. The World Health Organization rates it as moderately toxic. The European Union stipulates that the maximum residue level of cypermethrin in aquatic products is 50 μg/kg. The pesticide cypermethrin can be passed through pesticide residues on vegetables or through the food chain of aquatic organisms such as fish, and can further enter the human body.
For those with contact poisoning, in mild cases, the lips and skin may experience burning, itching, and numbness. Generally, the symptoms will disappear after leaving the scene, cleaning the skin, and resting for 1 to 2 hours;
Oral poisoning will initially manifest as pale face, burning sensation in the upper abdomen, nausea, vomiting, and abdominal pain, followed by dizziness, headache, eye twitching, and drooling. In severe cases, increased oral and nasal secretions, white foamy sputum, and Hoarseness, difficulty swallowing, general malaise, listlessness, paroxysmal convulsions, disturbance of consciousness, difficulty breathing, drop in blood pressure, and in critical cases, shock and death.
Cypermethrin (52315-07-8) uses
Pesticides Cypermethrin Pyrethroid insecticides. It has the characteristics of broad spectrum, high efficiency and rapid action. It is mainly contact-killing and stomach poisoning against pests. It is suitable for Lepidoptera, Coleoptera and other pests, but it is not effective against mites. It has a good control effect on aphids, cotton bollworms, Spodoptera litura, inchworms, leaf rollers, flea beetles, weevils and other pests on crops such as cotton, soybeans, corn, fruit trees, grapes, vegetables, tobacco, flowers and other crops. The usual dosage is 0.3~0.9g/100m2. For example, to control cotton bollworm and red bollworm, during the egg hatching period and before the larvae penetrate the buds and bolls, spray with 1000-1500 times of 10% EC; for citrus pests, spray with a concentration of 30-100mg/L; for tea pests, use 25～50mg/kg concentration spray. Be careful not to use it near mulberry gardens, fish ponds, water sources, or apiaries.
The pesticide cypermethrin is a safe and effective broad-spectrum insecticide. It has strong detoxification, stomach poisoning and feeding prevention effects. It is especially highly active against lepidopteran pests. It is suitable for the control of pests on various crops such as cotton, rice, vegetables, fruit trees and tea. But it is not suitable to be used as soil pesticide.
It is used to control pests in cotton, rice, corn, soybeans and other crops as well as fruit trees and vegetables. It is a pyrethroid broad-spectrum insecticide. It has the characteristics of strong contact killing, stomach poisoning and preventing feeding. It is highly active and broad-spectrum. , low-residue insecticide, with contact and stomach poisoning effects, used to control a variety of pests on a variety of crops. It is a highly efficient, broad-spectrum insecticide used to control Lepidoptera, red bollworms, cotton bollworms, and corn. Category II pyrethroids are used for borers, cabbage caterpillars, diamondback moths, leaf rollers and aphids. Strong inhibitor of calcineurin.
How to use cypermethrin (52315-07-8)
1. To control cotton pests, during the cotton aphid period, spray 10% EC with water at a dosage of 15-30ml per mu. The cotton bollworm is in the peak egg hatching period, and the pink bollworm is controlled in the second and third generation egg hatching stages. The dosage is 30-50ml per mu.
2. Control of vegetable pests: cabbage caterpillar and diamondback moth are controlled before the third instar larvae. The dosage is 20-40ml, or 2000-5000 times of the liquid. To prevent and control Huangshougua during its occurrence period, the dosage is 30-50ml per mu. 3. To control citrus leafminer pests in fruit trees, spray 10% EC with 2000-4000 times of liquid in water at the early stage of shoot emergence or the egg hatching period. At the same time, it can also control orange aphids, leaf roller moths, etc. Apple and peach heartworms can be controlled with 2000-4000 times of 10% EC when the egg and fruit rate is 0.5%-1% or during the egg hatching period.
3. To control tea tree pests, control tea green leafhoppers before the nymph stage and tea geometrids before the 3rd instar larval stage. Use 10% cypermethrin emulsifiable concentrate to spray water 2000-4000 times.
4. For the control of soybean pests, use 10% EC, 35-40ml per acre, which can control bean hornworms, soybean heartworms, bridge-building insects, etc., with ideal results.
5. Control of sugar beet pests: To control beet armyworms that are resistant to organophosphorus pesticides and other pyrethroid pesticides, 10% cypermethrin EC 1000-2000 times has good control effect.
6. Control of flower pests 10% EC can be used to control aphids on roses and chrysanthemums at a concentration of 15-20mg/L.
Cypermethrin (52315-07-8) Application
1. The pesticide cypermethrin is a pyrethroid insecticide. It has the characteristics of broad spectrum, high efficiency and rapid action. It is mainly contact-killing and stomach poisoning against pests. It is suitable for Lepidoptera, Coleoptera and other pests, but it is not effective against mites. It has a good control effect on aphids, cotton bollworms, Spodoptera litura, inchworms, leaf rollers, flea beetles, weevils and other pests on crops such as cotton, soybeans, corn, fruit trees, grapes, vegetables, tobacco, flowers and other crops. The usual dosage is 0.3~0.9g/100m2. For example, to control cotton bollworm and red bollworm, during the egg hatching period and before the larvae penetrate the buds and bolls, spray with 1000-1500 times of 10% EC; for citrus pests, spray with a concentration of 30-100mg/L; for tea pests, use 25～50mg/kg concentration spray. Be careful not to use it near mulberry gardens, fish ponds, water sources, or apiaries.
2. The insecticide cypermethrin has strong detoxification, stomach poisoning and feeding prevention effects, and is especially highly active against lepidopteran pests. It is suitable for the control of pests on various crops such as cotton, rice, vegetables, fruit trees and tea. But it is not suitable to be used as soil pesticide.
3. The insecticide cypermethrin is used to control pests in cotton, rice, corn, soybeans and other crops as well as fruit trees and vegetables.
4. The insecticide cypermethrin is a broad-spectrum insecticide of the pyrethroid class and has the characteristics of strong contact killing, stomach poisoning and preventing feeding.
5. The insecticide cypermethrin is a highly active, broad-spectrum, low-residue insecticide with contact and stomach poisoning effects, and is used to control a variety of pests on a variety of crops.
6. The insecticide cypermethrin is a highly efficient and broad-spectrum insecticide used to control lepidoptera, red bollworms, cotton bollworms, corn borers, cabbage caterpillars, diamondback moths, leaf rollers and aphids, etc.
When is the most appropriate time to administer cypermethrin (52315-07-8)?
1. Grape green bug
Best control period: pest occurrence period
Control method: Spray evenly with 3000-4000 times of 10% cypermethrin EC.
2. Peach heartworm
The best control period: before the overwintering generation of peach heartworm emerges
Prevention and control methods: Use 10% cypermethrin EC 3000 times and 50% phoxim EC 1000 times.
3. peach aphid
The best control period: peach aphid budding period
Prevention and treatment method: Spray with 10% cypermethrin EC 2000 times.
4. Pear aphid
The best control period: from the initial outbreak of pests to the entire occurrence period
Control method: Spray with 5000-6000 times of 10% cypermethrin EC.
5. Apple heartworm
The best prevention and control period: egg hatching period
Prevention and control methods: Use 10% cypermethrin EC 3000-4000 times.
6. Pear psylla
The best control period: the overwintering generation or the emergence period of young (1-3 instar) nymphs
Control method: Spray evenly with 3000-4000 times of 10% cypermethrin EC.
7. Scale insects
The best control period: the dispersion and transfer period of scale insect nymphs
Control method: Spray evenly with 3000-4000 times of 10% cypermethrin EC.
8. Cotton bollworm
The best control period: the young stage of pests
Control method: Spray evenly with 3000-4000 times of 10% cypermethrin EC.
Mixing with other pesticides Cypermethrin can be mixed with a variety of organophosphorus, carbamate and other pesticides to increase efficiency or expand the insecticidal spectrum. The main mixing methods are: mixed with phoxim, etc., for the control of cotton bollworm, diamondback moth and other pests; mixed with abamectin, insecticides, etc., for the control of leafminer; respectively mixed with acetamiprid, imidacloprid When mixed with others, it is used to control aphids; when mixed with pyridaben, abamectin, etc., it is used to control mites.
What is the difference between high-efficiency cypermethrin and cypermethrin (52315-07-8)?
1. Different definitions
High-efficiency cypermethrin: High-efficiency cypermethrin, also known as cyanoether valerate, is an agricultural pesticide that mainly controls lepidopteran pests on crops and is highly toxic. The original drug appears as white to cream-colored crystals and is easily soluble in aromatic hydrocarbons, ketones and alcohols.
Cypermethrin: Cypermethrin, the chemical formula is C22H19CL2NO3, the industrial product is a yellow to brown viscous solid, and it is a viscous liquid at 60°C. It is a pesticide. It is moderately toxic and has irritating effects on skin and mucous membranes. When heated above 220°C, cypermethrin will decompose to produce cyanide gas.
2. Different applications
Beta-cypermethrin: Beta-cypermethrin is a non-systemic insecticide with contact and gastrotoxic effects. Disrupts nervous system function by interacting with pest sodium channels. Used in public health and animal husbandry to control a variety of pests such as flies, cockroaches, mosquitoes, fleas, lice, bed bugs, and animal external parasites such as ticks, mites, etc.
Cypermethrin: Pyrethroid insecticide. It has the characteristics of broad spectrum, high efficiency and rapid action. It is mainly contact-killing and stomach poisoning against pests. It is suitable for Lepidoptera, Coleoptera and other pests, but it is not effective against mites.
It has a good control effect on aphids, cotton bollworms, Spodoptera litura, inchworms, leaf rollers, flea beetles, weevils and other pests on crops such as cotton, soybeans, corn, fruit trees, grapes, vegetables, tobacco, flowers and other crops. The usual dosage is 0.3~0.9g/100m2. For example, to control cotton bollworm and red bollworm, during the egg hatching period,
Before the larvae penetrate the buds and bells, spray with 1000-1500 times of 10% EC; spray with a concentration of 30-100mg/L for citrus pests; spray with a concentration of 25-50mg/kg for tea pests. Be careful not to use it near mulberry gardens, fish ponds, water sources, or apiaries.
3. Different physical and chemical properties
High-efficiency cypermethrin: High-efficiency cypermethrin is a mixture of two pairs of racemates, with a cis-trans ratio of approximately 2:3. The original drug appears as white to cream-colored crystals and is easily soluble in aromatic hydrocarbons, ketones and alcohols. Commonly used preparations are 45% emulsifiable concentrate.
Melting point 64~71℃ (peak value 67℃).
Vapor pressure 180mPa (20℃)
Specific gravity 1.32g/ml (theoretical value), 0.66g/ml (crystalline, 20℃)
Solubility in water with pH=7, 51.5 (5℃), 93.4 (25℃), 276.0 (35℃) μg/l (theoretical value), isopropyl alcohol 11.5, xylene 749.8, methylene chloride 3878, acetone 2102, Ethyl acetate 1427, petroleum ether 13.1 (both mg/ml, 20℃)
Stability 150℃, stable in air and sunlight, and in neutral and slightly acidic media. Epimerization in the presence of alkali, hydrolysis in strong alkali.
Cypermethrin: Chemical formula: C22H19CL2NO3
Molecular weight: 416.32
Properties: The industrial product is a yellow to brown viscous solid, and becomes a viscous liquid at 60°C.
Melting point: 60-80℃
Relative density (water=1): 1.1
Vapor pressure: 2.3×107Pa at 20℃
Volatility: stable to light, slow weight loss at temperatures >220°C, stable under weak acidic neutral conditions, decomposes when exposed to alkali, hydrolysis half-life is 1 day.
Solubility: Hardly soluble in water, soluble in alcohols, chlorinated hydrocarbons, ketones, cyclohexane, benzene and xylene >450g/L.
Flash point: 80℃ Oil-water partition coefficient: Log value of octanol/water partition coefficient: 6.3
HAZARDS When heated above 220°C, the material decomposes to form cyanide gas.
Cypermethrin (52315-07-8) Precautions
Strictly follow the safe operating procedures for pesticides when using them. Ready to use. Do not leave it for a long time after diluting with water.
Avoid contamination of skin and eyes with medicinal powder and liquid. Please wash your hands and face after spraying.
Use with caution in places with young livestock and poultry. Do not pollute water sources, ponds, mulberry gardens, and bee farms.
Store in a cool, dry and dark place, away from children, food and feed. This product has no antidote. If swallowed by mistake, please seek medical attention immediately for symptomatic prevention and treatment.
Insecticide cypermethrin (52315-07-8) price
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