Common name: Tefluthrin
Chemical name:
[1α,3α(Z)]-(±)-(2,3,5,6-tetrafluoro-4-methylphenyl)methyl-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate
Structural formula:
Molecular formula: C17H14ClF7O2
Chemical class: Pyrethroid insecticides
CAS No.: 79538-32-2
Properties:
Form: Colorless solid
Melting point: 44.6℃
Vapour pressure: 8.4 mPa (20℃)
Solubility in water: 0.02mg/l (20℃)
Solubility in solvents: In acetone, hexane, toluene, dichloromethane, ethyl acetate＞500, methanol 263 (all in g/l, 21℃)
Stability: Stable for＞84 days at 50℃.
Toxicity:
Acute oral LD50 for rats: male 22mg/kg, female 35mg/kg
Acute dermal LD50 for rats: male 316mg/kg, female 177mg/kg
Inhalation LC50 for rats: 0.05mg/l
Slight irritation to eyes and skin.
Ecotoxicology:
Effects on aquatic organisms: bulltrout LC50 60μg/l, bluegill sunlight 130μg/l (96h), daphnia EC50 70μg /l(48h), algae EC50 ＞1.5mg/l(72h).
Effects on bees: Oral LD50 1880μg/bee, contact LD50 280μg/bee
Effects on birds: bobwhite quail LD50 730mg/kg, mallard ducks LD50 4190mg/kg
Effects on earthworms: LC50 0.32mg/kg soil
Environmental fate:
At normal application rates, there are no effect on soil microflora or earthworms.
Mode of action:
Acts on the nervous system of insects, and disturbs the function of neurons by interaction with the sodium channel.
Usage:
Control of a wide range of soil insect pests, particularly those of the orders Coleoptera, Lepidoptera, and Diptera, in maize, sugar beet, wheat and other crops, as granular and seed treatment producats.
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