What Is a Pest Exterminator?

Pyrethroids are a broad-spectrum insecticide capable of controlling a variety of pests. Their insecticidal virulence is 10 to 100 times higher than that of older generation insecticides such as organochlorine, organophosphorus, and carbamates. Pyrethroids have strong contact-killing effects on insects, and some species have both gastric toxicity or fumigation, but they do not have systemic effects. Its mechanism of action is to disrupt the normal physiology of insect nerves, causing them to die from excitement, spasm to paralysis. Due to the small amount and low concentration of pyrethroids, pyrethroids are safer for humans and livestock, and have less pollution to the environment. Its disadvantages are mainly high toxicity to fish and damage to some beneficial insects. Long-term repeated use will also lead to pest resistance.

CAS number: 8003-34-7

MDL number: MFCD00078611

EINECS number: 232-319-8 ^[1]

Properties: yellow viscous liquid

Melting point (ºC atmospheric pressure): 170-200

Refractive index (n20 / D): 1.45

Solubility (mg / mL): insoluble in water, soluble in most organic solvents ^[1]

Toxic to mammals. The LD50 of gavage in rats is 12g / kg; it can cause severe allergic dermatitis, and large doses have effects on the central nervous system. ^[1]

1. Hydrophobic parameter calculation reference value (XlogP): None

2.Number of hydrogen bond donors: 0

3.Number of hydrogen bond acceptors: 8

4.Number of rotatable chemical bonds: 16

5.Number of tautomers: 25

6. Topological molecular polar surface area 113

7.Number of heavy atoms: 51

8.Surface charge: 0

9.Complexity: 1390

10.Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 3

12. Uncertain number of atomic stereocenters: 3

13. Determine the number of chemical bond stereocenters: 3

14. Uncertain number of chemical bond stereocenters: 0

15.Number of covalent bond units: 2 ^[1]

2-8 ° C. ^[1]

A class of biomimetic synthetic insecticides are synthetic esters derived from changing the chemical structure of natural pyrethroids. Natural pyrethroids are ancient

Pyrethroids are divided into two categories, natural and synthetic. The synthetic ones are light unstable and light stable (see table). Their chemical structure is more complicated,

White flower pyrethrum,

The main source of pyrethrum is the flowers of the pyrethrum plant, and the pyrethrum is also contained in the roots and stems.

Pyrethroids are usually extracted at low temperature. The processing technology is as follows:

Dried flower granulation ---

I. Emergency Response to Leakage

Cut off the fire. Wear self-contained breathing apparatus and general fire protective clothing. Stop leaks while ensuring safety. Water spray reduces evaporation. Absorb with sand or other non-combustible adsorbent. It is then transported to an open area for burial, evaporation, or incineration. If there is a large amount of leakage, use a dike to contain it, and then collect, transfer, recycle or harmlessly dispose of it.

Second, protective measures

Respiratory protection: When the concentration in the air is high, you should wear a gas mask. It is recommended to wear a self-contained breathing apparatus for emergency or rescue.

Eye protection: Wear chemical safety protective glasses.

Body protection: Wear antistatic work clothes.

Hand protection: Wear protective gloves.

Others: Smoking is strictly prohibited on the job site. Avoid prolonged repeated exposure.

Third, first aid measures

Skin contact: Remove contaminated clothing and rinse thoroughly with soap and water.

Eye contact: Open the upper and lower eyelids immediately and rinse with running water for 15 minutes. Seek medical attention.

Inhalation: Remove from the scene to fresh air. Difficulty breathing to give oxygen. Once breathing stops, begin CPR immediately. Seek medical attention.

Ingestion: If you take it by mistake, rinse your mouth with water, drink plenty of warm water, induce vomiting, and consult a doctor immediately. ^[3]

Dangerous Transport Code: UN 2810 6.1 / PG 3

Dangerous goods mark: Harmful to the environment

Safety identification: S13S60S61

Danger sign: R20 / 21 / 22R50 / 53 ^[3]