Lambda-cyhalothrin

Effi cient cypermethrin is white solid in pure form and light yellow

solid in industrial form. m.p. 49.2℃ , vapor pressure 200×10-

9Pa (2.67×10-7Pa) (20℃ ). Refractive index n24D1.534, b.p. 187-

190℃ /26.7Pa. Soluble in acetone, methanol, ethyl acetate, toluene

and other organic solvents, solubility are >500g/L; insoluble in water.

Stable storage at room temperature for more than half a year; half_x005flife in water under sunlight 20d; half-life in soil 22-82d.

High-perf ormance cyfl uthrin is a kind of high-eff ective, broad spectrum and quick-acting pyrethroid insecticides and acaricides, which mainly has contact and stomach toxicity, without internal absorption.

Lambda-Cyhalothrin is a synthetic pyrethroid insecticide widely used in agriculture, horticulture, and public health for controlling a broad spectrum of pests. Known for its high potency and rapid knockdown action, it effectively manages both chewing and sucking pests across various crops and environments.

Key Features

1. Chemical Formula: C23H19ClF3NO3

2. Mode of Action: Disrupts the nervous system of insects by modulating sodium channels, leading to paralysis and death.

3. Target Pests: Aphids, thrips, beetles, caterpillars, whiteflies, and mosquitoes.

4. Formulations: Available as emulsifiable concentrates (EC), wettable powders (WP), and microencapsulated suspensions.

Applications

Agricultural Use

• Crops: Used on cereals, cotton, vegetables, fruits, and oilseeds to control a wide range of pests.

• Pest Management: Particularly effective against lepidopteran pests, mites, and aphids.

Horticultural Use

• Ornamental Plants: Provides protection for decorative plants against common insect infestations.

Public Health Use

• Vector Control: Used in mosquito control programs to combat malaria, dengue, and other vector-borne diseases.

Household Use

• Indoor Pest Control: Effective against cockroaches, ants, and other domestic pests.

Mode of Action

Lambda-Cyhalothrin acts on the sodium channels in the nerve cells of insects, disrupting their normal function. This results in hyperexcitation, paralysis, and eventual death of the pest. Its quick knockdown effect makes it highly effective for immediate pest control.

Advantages

1. Broad-Spectrum Control: Effective against a wide variety of insect pests.

2. Rapid Action: Provides quick knockdown and control of pests.

3. Residual Activity: Offers extended protection after application.

4. Low Application Rates: High potency allows for effective control at low dosages.

Safety and Environmental Considerations

Handling and Storage

• Protective Measures: Wear gloves, masks, and protective clothing during handling and application.

• Storage: Store in a cool, dry place, away from food, water, and direct sunlight.

Environmental Impact

• Aquatic Toxicity: Highly toxic to fish and aquatic organisms; avoid contamination of water sources.

• Non-Target Effects: Harmful to beneficial insects, including bees; avoid application during flowering periods.

Human Health Risks

• Toxicity: Can cause skin and eye irritation; inhalation or ingestion may lead to nausea, dizziness, or more severe effects.

• Safety Guidelines: Adhere to recommended application rates and avoid direct exposure.

Limitations

1. Environmental Persistence: May accumulate in soil and water, affecting non-target organisms.

2. Resistance Development: Overuse can lead to pest resistance; rotation with other insecticides is recommended.

3. Regulatory Restrictions: Usage is regulated in some regions due to environmental and health concerns.

Conclusion

Lambda-Cyhalothrin is a powerful and effective insecticide for controlling a wide range of pests in agricultural, horticultural, and public health applications. While it offers significant benefits, responsible use, adherence to safety protocols, and awareness of its environmental impact are essential for sustainable pest management.