Chlorpyriphos 50% EC

Chlorpyrifos 50% EC is a powerful, broad-spectrum organophosphate insecticide and termiticide. The "50% EC" stands for Emulsifiable Concentrate, meaning the active ingredient is dissolved in a solvent that forms a milky emulsion when mixed with water.

## How It Works (Mode of Action)

Chlorpyrifos works as a nervous system disruptor. It inhibits the enzyme acetylcholinesterase, causing a buildup of the neurotransmitter acetylcholine.⁵ This leads to overstimulation of the insects nervous system, resulting in paralysis and death. It acts through:

• Contact: Kills insects that touch the spray.

• Stomach: Kills insects that eat treated plant parts.

• Fumigant: Has a mild vapor action that reaches pests in hidden crevices.

## Common Uses & Dosages

It is primarily used to control biting, chewing, and sucking pests.

## Safety & Precautions

Warning: This chemical is highly toxic. Always check local regulations before use, as legal status varies by country.

• PPE: Always wear chemical-resistant gloves, a face shield, and protective clothing. Avoid breathing the spray mist.

• Environmental Impact: Do not spray near water bodies; it is extremely toxic to fish. Do not apply during flowering, as it is lethal to bees.

• First Aid: If accidentally swallowed, do not induce vomiting unless directed by a doctor. Atropine is the specific antidote used by medical professionals.

• Storage: Keep under lock and key, away from children, food, and animal feed