Pymetrozine Pyridines Insecticide

Common name:  Pymetrozine

Chemical name: 

(E)-4,5-Fihydro-6-methyl-4-((3-pyridinylmethylene)amino)-1,2,4-triazin-3(2H)-one

Molecular formula: C10H11N5O

Structural formula:

Molecular weight: 217.23

CAS No. : 123312-89-0

Product description：

Pymetrozine belongs to the pyridine (pyridinethimide) or triazinone class of insecticides and is a non - cytocytic insecticide. Pymetrozine has a tactile effect on insect pests and internal absorption activity. In plants, it can transport in both xylem and phloem. Therefore, it can be used as foliar spray and soil treatment. Because of its good transport characteristics, the newly grown branches and leaves can also be effectively protected after spraying stems and leaves.

Physical and chemical properties:

Appearance: white crystalline powder.

Melting point: 217℃.

Vapor pressure (20℃) : < 9.7 × 10^-3 Pa.

Solubility (20℃, g/L) : water, 0.27; Ethanol, 2.25; N-hexane, < 0.01.

Stability: stable to light, heat, weak acid and weak base conditions.

Specification of active drug:

Appearance: white or light powder.

Active ingredient content, % : ≥95.0

Acetone insoluble substance, % : ≤1.0

Moisture, % : ≤1.0

PH range: 6-9

Preparation (25% pymetrozine wettable powder) :

Appearance: light yellow loose powder, no lumps.

Pyrazinone content, % : 25.0

Suspension rate, % : ≥75

Wetting time, S: ≤90

Fineness (through 44mm aperture screen), % : ≥98

Moisture, % : ≤1.5

PH range: 8.0-10.0

Usage：

Pymetrozine has high control effect on aphid, planthopper, leafhopper and whitefly of rice, vegetable, cotton, wheat and fruit tree. This agent has excellent selectivity to homoptera pests, better selectivity to aphid than the best anti-aphid agent at present -- Anti aphid, but also has good internal absorption.