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Chemical name: O, o-diethyl o-3, 5, 6-trichloro-2-pyridyl phosphorothioate
Synonyms: Phosphorothioic acid o, o-diethyl o-(3, 5, 6-trichloro-2-pyridinyl) ester; Chlorpyrifos-ethyl; Chlorpyritos; Clorpyrifos; Dowco 179; Dursban hf; Eradex; Lorsban 4e-sg; Pyrinex; Super i. Q. A. P. T.; Trichlorpyrphos
Molecular formula: C9h11ci3no3ps
Molecular weight: 350.59
Cas registry number: 2921-88-2
Properties: Colorless crystals or white powder with an unpleasant smell. Density is 1.398(43.5'c). Melt point is 41.5-43.5'c. Vapor pressure is 0.25x10-5pa when temperature is 20'c. Its water solubility is negligible. While, it is soluble in most organic solvents.
Stability: In acid aqueous solution, it is stable. But it decomposes very easily when the environment become alkali.
Validity period: 2 years under normal environment.
Tichnical 95% 200l/drum
Fomulation(ec) 20%, 40%, 48% 200l/drum
Usage: It has a broad range of insecticidal activity and is effective by contact, ingestion and vapor action, but is not systemic. Used for control of flies, household pests, mosquitoes (larvae and adults) and of various crop pests in soil and on foliage; Also used for control of ectoparasites on cattle and sheep.