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| Quinalphos |
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| O,O-diethyl O-2-quinoxalinyl phosphorothioate |
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| 13593-03-8 |
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| For many insect pests belonging to the orders Coleoptera, Diptera, Hemiptera, Lepidoptera, etc. For caterpillars on vegetables, ground nuts, and cotton, as well as scales and caterpillars on fruit trees. |
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Made by the reaction of ophenylenediamine, chloroacetic acid & O,O-diethyl phosphorochloridothioate
pure compound is a colorless crystalline solid. Melting point 31°-32°C, boiling at 142°C at 3.10-4 Torr under decomposition, vapor pressure 3 x 10-6 Torr at 20°C
specific gravity d 20/4°C = 1.235, refractive index 1.5624 (supercooled melt). It is stable under ambient storage conditions, when diluted in nonpolar organic solvents, and in presence of stabilizing agents. Susceptible to hydrolysis.
Half-life periods in aqueous buffer systems at 24°C, 56 days at pH 5, 40 days at pH 7, 30 days at pH 9. Soluble in toluene, xylene, and other aromatic hydrocarbons, diethyl ether, ethylacetate, acetone, acetonitrile, methanol, and ethanol slightly soluble in light petroleum. |
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