Cyhalothrin

Cyhalothrin

氯氟氰菊酯

(RS)-α-cyano-3-phenoxybenzyl (1RS,3RS)-3-[(Z)-2-chloro-3,3,3-trifluoropropenyl]-2,2-dimethylcyclopropanecarboxylate
or
(RS)-α-cyano-3-phenoxybenzyl (1RS)-cis-3-[(Z)-2-chloro-3,3,3-trifluoropropenyl]-2,2-dimethylcyclopropanecarboxylate

cyano(3-phenoxyphenyl)methyl (1R,3R)-rel-3-[(1Z)-2-chloro-3,3,3-trifluoro-1-propenyl]-2,2-dimethylcyclopropanecarboxylate

68085-85-8

C₂₃H₁₉ClF₃NO₃

Insecticides > Pyrethroid insecticides

Cyhalothrin is a pesticide to be used against animal, public, and agricultural pests including beetles, aphids, and butterfly larvae

Wheat, Barley, Beans (dry) include Butter beans, Cow peas, Kidney beans, Lentil, Lima beans, Pegia, Sultani, Sultapyar and White beans, Potato, Sugar beet

beetles, aphids, and butterfly larvae

WP = Wettable powder

Thiamethoxam+lambda-cyhalothrin
Spinosad+lambda-cyhalothrin
Pymetrozine+Lambda-cyhalothrin
Propoxur+Lambda-cyhalothrin
Profenofos+lambda-cyhalothrin
Lambda-cyhalothrin+triazophos
Lambda-cyhalothrin+thiosultap-monosodium
Lambda-cyhalothrin+Pirimiphos-methyl
Lambda-cyhalothrin+pirimicarb
Lambda-cyhalothrin+Piperonyl butoxide+tetramethrin
Lambda-cyhalothrin+methomyl+phoxim
Lambda-cyhalothrin+methomyl
Lambda-cyhalothrin+malathion+phoxim
Lambda-cyhalothrin+malathion
Lambda-cyhalothrin+Lufenuron
Lambda-cyhalothrin+isocarbophos
Lambda-cyhalothrin+Hexaflumuron
Lambda-cyhalothrin+fenitrothion
Lambda-cyhalothrin+endosulfan+phoxim
Lambda-cyhalothrin+endosulfan
Lambda-cyhalothrin+emamectin benzoate
Lambda-cyhalothrin+Dinotefuran
Lambda-cyhalothrin+dimethoate
Lambda-cyhalothrin+diazinon
Lambda-cyhalothrin+chlorpyrifos-methyl
Lambda-cyhalothrin+chlorpyrifos+Piperonyl butoxide
Lambda-cyhalothrin+chlorpyrifos
Lambda-cyhalothrin+chlorantraniliprole
Lambda-cyhalothrin+buprofezin
Imidacloprid+lambda-cyhalothrin
Endosulfan+lambda-cyhalothrin
Diflubenzuron+Lambda-cyhalothrin
Diflubenzuron+Lambda-cyhalothrin
Dichlorvos+lambda-cyhalothrin
Diafenthiuron+lambda-cyhalothrin
Cyhalothrin+parathion-methyl+isocarbophos
Clothianidin+Lambda-Cyhalothrin
Acetamiprid+lambda-cyhalothrin
Abamectin+lambda-cyhalothrin

Molecular weight:449.9; Physical form:Yellow to brown viscous oil ( tech.). Density:1.25 (25 °C); Composition:Tech. grade cyhalothrin has purity 90% m/m, of which 95% is cis- isomers. Flash point:204 °C ( tech., Pensky-Martens closed cup); Vapour pressure:0.001 mPa (20 °C, est.); Partition coefficient(n-octanol and water):logP = 6.9 (20 °C); pKa:>9 (hydrolysis prevents measurement); Solubility:In water 0.005 mg/l ( pH 6.5, 20 °C). In acetone, dichloromethane, methanol, diethyl ether, ethyl acetate, hexane, toluene, all >500 g/l (20 °C).; Stability:Stable to decomposition and cis/trans isomerisation for at least 4 years in the dark at 50 °C. Stable to light; loss on storage in the light is <10% in 20 months. Decomposes at 275 °C. Slowly hydrolysed by water in sunlight.

Oral:Acute oral LD₅₀ for male rats 166, female rats 114, guinea pigs >5000, rabbits >1000 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for male rats 1000-2500, female rats 200-2500, rabbits >2500 mg/kg. Moderate eye irritant; not a skin irritant (rabbits). Moderate skin sensitiser (guinea pigs). Inhalation: LC₅₀ (4 h) for rats >0.086 mg/l.

Ecotoxicology: 
Birds:Acute oral LD₅₀ for mallard ducks >5000 mg/kg.Daphnia: LC₅₀ (48 h) 0.38 μg/l.Fish: LC₅₀ (96 h) for rainbow trout 0.00054 mg/l. 
Environmental fate: 
Animals:In rats, following oral administration, cyhalothrin is rapidly eliminated in urine and faeces. The ester group is hydrolysed, both moieties forming polar conjugates.Soil:In soil, DT₅₀ c. 4-12 weeks. Leaching of cyhalothrin and its degradation products through a range of soil types is negligible.

Hazard Class:II (Moderately hazardous)