Alphacypermethrin Technical
- Chemical Class: Pyrethroid (Type II – contains cyano group)
- CAS No.: 67375-30-8
- Empirical Formula: C₂₂H₁₉Cl₂NO₃
- Molecular Weight:3 g/mol
- Technical Purity: Typically ≥ 92%
Mode of Action
- Primary Action: Acts on the nervous system of insects.
- Mechanism: Alphacypermethrin prolongs the opening of sodium channels in the neuronal membrane, causing continuous nerve stimulation, paralysis, and eventual death of the insect.
- IRAC Classification: Group 3A – Sodium channel modulators
Applications
- Alphacypermethrin is widely used in agriculture, public health, and animal health sectors:
Agricultural Uses
- Crops: Cotton, cereals (rice, wheat, maize), vegetables, soybeans, tea, fruits, and ornamentals.
Public Health & Household Use
- Effective against mosquitoes, houseflies, cockroaches, and other household insects.
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Used in bed nets and residual sprays for malaria vector control.
Weeds Controlled
- None – Alphacypermethrin is an insecticide, not a herbicide, so it does not control weeds.
Technical Overview
- Physical State: Crystalline solid
- Color: Pale brown to off-white
- Odor: Mild characteristic
- Solubility: Insoluble in water; soluble in organic solvents (xylene, acetone, hexane)
- Stability: Stable under normal storage; decomposes under strong alkaline or acidic conditions.
- Compatibility: Compatible with many insecticides and fungicides; avoid mixing with strong alkalis.
Main Uses
- Control of a broad spectrum of insect pests in agriculture and forestry.
- Used for residual spraying in vector control programs (mosquitoes, flies).
- Employed in treated nets, indoor residual spraying (IRS), and termite control.
- Used in grain storage protection and animal housing for ectoparasite control.
- Storage and Stability
- Storage Conditions:
- Store in cool, dry, and well-ventilated
- Keep away from direct sunlight, heat sources, and moisture.
- Avoid contact with food, feed, and drinking water.
- Stability:
- Stable for at least 2 years under recommended storage.
Decomposes slowly under UV light or alkaline conditions.