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<br />Table 2. Chemical and other properties of chlorpyrifos (from Brust 1966; <br />Rigterink and Kenaga 1966; Kenaga 1971; Windholz 1976). <br /> <br />Variable <br /> <br />Datum <br /> <br />Chemical name <br /> <br />Phosphorothioic acid 0, O-diethyl 0- <br />(3,5,6 -trichloro-2-pyridinyl) ester <br /> <br />CAS 2921-88-2; Dursban; Lorsban; Dowco 179; ENT <br />27311; Trichlorpyrphos; Brodan; Eradex; Killmaster; <br />Pyrinexi Chlorpyriphos-ethyl <br /> <br />Alternate names <br /> <br />Primary uses <br /> <br />Insecticide, acaricide <br /> <br />Producers <br /> <br />Dow Chemjcal Company; Makhteshim-Agan (Israel); All <br />India Medical Corp.; Planters Products, Inc. <br /> <br />Empirical formula <br /> <br />C9H11C13N03PS <br /> <br />Structural formula <br /> <br />Cl-O-Cl <br />! ~/OC2H5 <br />Cl-:"o. -O-P, <br />N OC2Hs <br /> <br />Molecular weight <br />Physical state at <br />25 C <br /> <br />350.57 <br /> <br />White granular crystalline solid <br /> <br />4 <br />