Insecticide Clorpyrifos 97%TC Cas 2921-88-2

Clorpyrifos is an organophosphate insecticide. The oxidative metabolite of chlorpyrifos is an inhibitor of acetylcholinesterase (AChE), which affects the nervous function of insects, humans, and other animals. The metabolite of chlorpyrifos oxon (CPO) is hydrolyzed by plasma paraoxonase 1 (PON1), and overexpression of PON1 can alleviate the neurotoxic sensitivity associated with CPO exposure.


Formula: C9H11Cl3NO3PS

Physical State: crystallize

Purity(%): 97%

Application: Agricultura

Color: White

Formulation:20% 45%EC 0.5% 15%Granule 30%SE and used to manufacturer more formulated product

  • Category: Insecticide
  • Tags:
      Insecticide,Clorpyrifos,Cas 2921-88-2
Chlorpyrifos is an organophosphate insecticide that is classified as a phosphorus ion. The oxo metabolites of chlorpyrifos are inhibitors of acetylcholinesterase (AChE), which affect the neurological function of insects, humans and other animals. Chlorpyrifos oxygenase (CPO) metabolites are hydrolyzed by plasma paraoxonase 1 (PON1), and overexpression of PON1 attenuates neurotoxic susceptibility associated with CPO exposure.

Chlorpyrifos, also known as chlorpyrifos, chlorpyrifos, the chemical name is O, O-diethyl-O-(3,5,6-trichloro-2-pyridyl) phosphorothioate, and the molecular formula is C9H11Cl3NO3PS , in white crystal, with a slight mercaptan smell, is a non-systemic broad-spectrum insecticide and acaricide with high volatility in the soil

Features of Chlorpyrifos

1. It has triple effects of stomach poisoning, contact killing and fumigation, and has good control effect on various chewing and sucking mouthparts pests on rice, wheat, cotton, fruit trees and tea trees.

2. It has good mixing compatibility and can be mixed with a variety of insecticides with obvious synergistic effect (such as mixed use of chlorpyrifos and triazophos).

3. Compared with conventional pesticides, it has low toxicity and is safe to natural enemies. It is the first choice to replace highly toxic organophosphorus pesticides (such as 1605, methamidophos, omethoate, etc.).

4. It has a wide insecticidal spectrum, is easy to combine with organic matter in the soil, and has special effects on underground pests, with a lasting period of more than 30 days.

⒌ No systemic effect, ensuring the safety of agricultural products and consumers, suitable for the production of pollution-free high-quality agricultural products.

Chlorpyrifos mechanism of action

1. It is an acetylcholinesterase inhibitor, which is a phosphorothioate insecticide.

2. Inhibit the activity of acetylcholinesterase AChE or cholinesterase ChE in the nerves in the body and destroy the normal nerve impulse conduction, causing a series of poisoning symptoms: abnormal excitement, convulsions, paralysis, and death. Chlorpyrifos Precautions

1. The safe interval of this product for citrus trees is 28 days, and it can be used at most once per season; the safe interval for rice is 15 days, and it can be used at most twice per season.

2. This product is poisonous to bees, fish and other aquatic organisms, and silkworms. During the application period, the impact on the surrounding bee colonies should be avoided, and it is forbidden to use near the flowering period of nectar crops, silkworm rooms and mulberry circles. Apply pesticides away from aquaculture areas, and it is forbidden to wash pesticide application equipment in rivers and other water bodies.

3. This product is sensitive to melons, tobacco and lettuce seedlings, please use with caution.

4. Wear protective clothing and gloves when using this product to avoid inhaling the liquid medicine. After spraying, wash the equipment thoroughly, bury or incinerate the packaging bag, and wash hands and face with soap immediately

5. Although Difenide is a low-toxic pesticide, it should be used in accordance with the rules of safe pesticide application. If it is accidentally poisoned, it can be treated with atropine or phosphine according to the case of organophosphorus pesticide poisoning, and it should be sent to the hospital for diagnosis and treatment in time.

6. It is recommended to alternate use with insecticides with different mechanisms of action.

7. It cannot be mixed with alkaline pesticides. In order to protect bees, it should be avoided during the flowering period.

8. The medication should be stopped before harvesting of various crops.

How to use chlorpyrifos

Rice rice planthopper mu with 70~90ml stems and leaves evenly sprayed

Rice Leafroller 70~90ml per mu, spray evenly on the stems and leaves

Rice stem borer with 70~90ml of stems and leaves evenly sprayed

Use 300-360 ml per mu for rice and rice gall midges, spray at the stage of 1 leaf and 1 heart of seedlings and the tillering stage of the field, or sprinkle 15-20 kg of fine sand.

Citrus trees, scale insects, diluted 1000~1500 times, evenly sprayed on stems and leaves

Apple tree cotton aphid Dilute 1500 times Spray evenly during the occurrence of cotton aphid

Litchi pedicle borer Dilute 1000~1500 times Apply once 20 days and 7-10 days before harvesting litchi and longan

Wheat aphids Use 15~25ml/mu to spray evenly during the peak period of aphids

Rape armyworm Mu use 40~50ml to spray evenly before the 3rd instar larvae

Safe handling of chlorpyrifos

Symptoms of poisoning: convulsions, convulsions, nausea, vomiting, etc.

In case of accidental ingestion: wash mouth with clean water, do not induce vomiting, take this label to a doctor for diagnosis and treatment. Doctors can use atropine, fludridine, etc. to treat organophosphorus pesticide poisoning, and pay attention to delayed neurotoxicity; if inhaled accidentally: move the patient to a ventilated place; if splashed into the eyes or touch the skin: use a large amount of Rinse with water for at least 15 minutes.

Chlorpyrifos storage and transportation:

This product should be kept away from children and other irrelevant personnel, and should be stored in a cool, dry, and ventilated warehouse. It should not be stored and transported together with food, seeds, and feed; it should be protected from moisture and sunscreen during transportation; it is forbidden to laugh and play when loading and unloading, and it is forbidden to eat, drink, smoke.

Package of Chlorpyrifos

We also supply some accessories to add more functions for end-users' convenience, which also help our distributors and business partners sell our products in their area. Any special package requirements, please don't be hesitate to tell us.

Large Package:

Solid: 25Kg UN approved fiber drums with LDPE liner;

Liquid: 200L UN approved HDPE or iron drums.

Retail Package:

Solid: 10g;50g;100g;500g;1kg;5kg;25kg

Chlorpyrifos suppliers

Agripestcide is a professional pesticide chemical manufacturer, supplying good and effective chlorpyrifos with high quality and good service. If you are looking for Chlorpyrifos, please feel free to contact us for latest price.





Molecular Weight



Melting Point

375.9±52.0 °C at 760 mmHg

Boiling Point


Physical State







25kg Cardboard barrel




Ventilation low temperature drying




2 years

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