Chemical Category

• Common Name: Lambda-Cyhalothrin
• Chemical Name (IUPAC): (1aS,3aZ)-3-[(Z)-2-chloro-3,3,3-trifluoroprop-1-enyl]-2,2-dimethylcyclopropanecarboxylate of (S)-α-cyano-3-phenoxybenzyl alcohol
• Chemical Formula: C₂₃H₁₉ClF₃NO₃
• CAS No.: 91465-08-6
• Chemical Family: Synthetic Pyrethroid Insecticide
• Type: Non-systemic, contact and stomach poison, with strong knockdown and residual effect

Mode of Action

• Acts on the nervous system of insects.
• Disrupts voltage-gated sodium channels in nerve membranes, leading to repeated firing of nerves, paralysis, and death.
• Provides rapid knockdown and long residual control due to high lipophilicity (adheres well to plant surfaces).
• Effective against insects through contact and ingestion.

Applications

• Used extensively in:
• Agriculture: Control of a wide range of chewing and sucking insect pests such as:

Aphids Thrips Bollworms Leaf folders Stem borers Cutworms Jassids Whiteflies.

Crops treated:

Cotton Paddy (rice) Maize Pulses Vegetables (cabbage, tomato, brinjal, okra, etc.) Fruits (mango, citrus, apple) Tea, coffee, ornamentals

Public Health: Mosquito, fly, and cockroach control.

 Weeds Controlled

• Not applicable — Lambda-Cyhalothrin is an insecticide, not a herbicide. (It targets insect pests and mites, not weeds.)

Technical Overview