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Cypermethrin

Cypermethrin structure

CAS No:
52315-07-8
Formula:
C22H19Cl2NO3
Chemical Name:
Cypermethrin
Synonyms:
Cyclopropanecarboxylic acid,3-(2,2-dichloroethenyl)-2,2-dimethyl-,cyano(3-phenoxyphenyl)methyl ester;NRDC 149;Cypermethrin;WL 43467;α-Cyano-m-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate;NRDC 166;Ripcord;Ardap;CCN 52;FMC 30980;JF 5705F;Cymbush;FMC 45497;NRDC 160;FMC 45806;WL 8517;Ammo (pesticide);Ammo;EXP 5598;Antiborer 3767;Nurele;RU 27998;Cyperkill;Agrothrin;Cyperil;Sherpa;SF 06646;Ambush CY;Ectomin;Cypor;Polytrin;Colt;Ambush C;Basathrin;Barricade 10EC;YT 305;Barricade;Cymperator;Supercypermethrin;Vucht 424;Kordon;Ectopor;Hilcyperin;Barricade (insecticide);Demon;Prevail;Demon TC;PYR-VU-TO 2;Supermethrin;Asymmethrin;Supercypermethrin forte;Prevail FT;Cympa-Ti;Neramethrin EC 50;Neramethrin;Ripcord 10;Peststop B;Peststop B 5SC;Cyperco;Fenom (pesticide);Summerin;Ralothrin;Supersect;Nurse Green;Robust;Arrivo;Drago;Ustaad;Kreokhin;Creokhin;Fenom;Excis;Trofy;Prevail (pesticide);Ecofleece Sheep Dip (Non-OP);Ronatak;Luseweilei;Leptocide;LW 1;Cybil;Cymet;Kral;Almetrin;Agrometrin;Cilcord;Dimcyp;Barrage;Flytick;Battery (insecticide);FMC 6113;Kinmix;Bandit;Toppel;Taran;Holster;Colt (pyrethrinoid insecticide);Assist 25CS;Cymtop;Cynoff EC;Cynoff WP;Cipkord;Sniper;Sniper (pyrethroid insecticide);Cyperfor S;Auzar 25 EC;Cypermethrin 25EC;Challenger 25EC;Challenger;Dudu Cyper;Cyper Lacer;Cyper Lacer 5EC;Tsifoks;Tianlongbao;CYPER PLUS;Green Weilei;97955-44-7;137497-61-1;139203-31-9;142443-95-6;69865-47-0;86752-99-0;86753-92-6;88161-75-5;146909-55-9;159940-28-0;186554-45-0;727730-89-4;886997-17-7
Categories:
Agrochemicals > Insecticides

Description

A safe and effective broad-spectrum insecticide with strong anti-killing, stomach poisoning and anti-feeding effects, especially with extremely high activity against lepidopteran pests. It is suitable for the control of pests on cotton, rice, vegetables, fruit trees and tea. But it is not suitable for use as a soil pesticide. It is used to control pests of cotton, rice, corn, soybeans and other crops and fruit trees and vegetables;

Cypermethrin Basic Attributes

Molecular Weight：

416.3

Exact Mass：

416.30

EC Number：

257-842-9

HScode：

2926909031

Characteristics

PSA：

59.3

XLogP3：

6.3

Appearance：

Brown Viscous Liquid

Density：

1.25 g/cm³ @ Temp: 20 °C

Melting Point：

80.5 °C

Boiling Point：

170-195°C

Flash Point：

100 °C

Refractive Index：

1.622

Water Solubility：

H2O: insoluble

Storage Conditions：

−20°C

Vapor Pressure：

Vapour pressure, Pa at 20°C:

Vapor Density：

1.25

Toxicity：

Oral-Rat LD50: 57.5 mg/kg; Oral-Mouse LD50: 24.57 mg/kg

Flammability characteristics：

Combustion produces toxic nitrogen oxides and chloride gases

Odor：

Odorless

Safety Information

Packing level：

III

Hazard category：

6.1(b)

Transport codes：

UN 2810 6.1/PG 3

wgk germany：

hazard class code：

20/22-37-50/53-43-37/38-22-36-20/21/22-11-52/53

safety instructions：

24-36/37/39-60-61-2-36-26-16-36/37

RTECS Number：

GZ1250000

Marks：

Xn,N,F

Storage features：

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

Stability/Shelf Life：

Stable. Incompatible with bases, strong oxidizing agents.

Precautionary statement(s)：

Missing Phrase - N15.00950417-P260-P280

Hazard Statements：

H301-H315-H317-H332-H335-H373-H410

Toxicity

Toxicity class：

most toxic

Cypermethrin Use and Manufacturing

Methods of Manufacturing

Preparation method-Permethrin chloride, aldehyde and sodium cyanide are reacted in the presence of a phase transfer catalyst. Operation method: Add 3-phenoxybenzaldehyde 3.4g (content 87.40%), permethrin chloride 3.0g (content 95.8%) and an appropriate amount of solvent to the reaction bottle, and keep the temperature at 20℃ under vigorous stirring Below, add a little of 0.85g (0.0163mol) of sodium cyanide, 0.27g of sodium carbonate and a phase transfer catalyst (benzyltriethylammonium chloride or m-phenoxybenzyltriethylammonium chloride) to dissolve in Salt solution in 6.5mL water. After the drop, the temperature was raised to 45-50°C, and the reaction was continued to be stirred for 5 hours. The aqueous phase was separated and extracted once with a small amount of toluene. The organic phases were combined and washed with water until neutral. After desolvation, pale yellow cypermethrin was obtained with a yield of 93%. For reports of epimerization of cypermethrin, see literature [5]. Preparation method dipermethrin chloride and α-cyano m-phenoxy benzyl alcohol reaction to produce cypermethrin. Preparation method Trichloromethrin reacts with the corresponding sulfonate to produce cypermethrin. Preparation method Sodium tetramethrin reacts with the corresponding α-halogenated cyanogen compound to produce cypermethrin.

Uses

Computed Properties

Molecular Weight:416.3
XLogP3:6
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:7
Exact Mass:415.0741989
Monoisotopic Mass:415.0741989
Topological Polar Surface Area:59.3
Heavy Atom Count:28
Complexity:643
Undefined Atom Stereocenter Count:3
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Benzyltriethylammonium chloride

Thionyl chloride

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