Form Odourless crystals(pure); yellow-brown vixcous semi-solid at ambient temperature (tech.).
M.p. 80.5℃,60~80℃(tech.).
V.p. 2.3×10^-4mPa(20℃).
S.g ./density 1.23(20℃).
Solubility In water 0.004mg/l(pH 7), In acetone, chloroform,cyclohexanone, xylene>450, ethanol 337, hexane 103(all in g/l, 20℃).
Stability Relatively stable in neutral and weakly acidic media.

Toxicology:

Oral Acute oral LD₅₀ for rats 250~4150(tech. 7180), mice 138mg/kg.
Skin and eye Acute percutaneous LD₅₀ for rats >4920mg/kg, rabbit
>2460mg/kg. Slightly skin and eyes irritant (rabbits).

Pyrethroid insecticide with contact and stomach action. Also exhibits antifeeding action. Control of a wide range of insects, especially Lepidoptera, but also Coleoptera, Diptera, Hemiptera, and other classes, in fruit (including citrus), vines,vegetables, potatoes, lettuce, tomatoes, cereals, maize, soya beans, cotton, coffee, cocoa, rice, beet, ornamentals, forestry, etc. Control of flies and other insects in animal houses; and mosquiteoes, cockroaches, houseflies and other insects pests in public health. Also used as an animal ectoparasiticide.