Form tech grade forms colourless or pale yellow crystals
M.p. 64-71℃
V.p. 180nPa(20℃)
S.g./density 1.32g/ml (theoretical),0.66g/ml(crystal powder)(20℃)
Solubility In water at PH7 , 51.5(5℃),93.4(25℃),276.0(35℃)(all in μg/l) In isopropanol 11.5,xylene 349.8,dichloromethane 3878,acetone 2102,ethl acetate 1427,petroleum ether 13.1(all in mg/ml,20℃)
Stability Stable to 150℃;to air and sunlight;in neutral and slightly acid media, epimerized in presence of base,hydrolysed in strong alkaline media.

Toxicology:

Acute oral LD₅₀ to rats: 649 mg/kg
Slightly irritant to skin, moderately irritant to eyes

Non-systemic insecticide with contact and stomach action, Acts on the nervous system of insects, disturbs the function of nervous by interaction with sodium charnel.Used against a wide range of insect pests in public health(e.g. flies, cockroaches, mosquitoes, fleas, lice bugs)and in veterinary applications(ectoparasitic ticks and mites).