- Dimethyl tetrachloroterephthalate
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Dimethyl tetrachloroterephthalate 
Dimethyl 2,3,5,6-tetrachlorobenzene-1,4-dicarboxylateOther namesChlorothal; Dimethyl 2,3,5,6-tetrachloroterephthalateIdentifiers CAS number 1861-32-1 
PubChem 2943 ChemSpider 2839 Jmol-3D images Image 1 - Clc1c(C(=O)OC)c(Cl)c(Cl)c(C(=O)OC)c1Cl
- InChI=InChI=1S/C10H6Cl4O4/c1-17-9(15)3-5(11)7(13)4(10(16)18-2)8(14)6(3)12/h1-2H3
Properties Molecular formula C10H6Cl4O4 Molar mass 331.96 g mol−1 Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references Dimethyl tetrachloroterephthalate (DCPA) is a chemical used in several selective preemergent herbicides. It is manufactured by American Vanguard under the name Dacthal.[1]
Dimethyl tetrachloroterephthalate is a selective preemergent herbicide,[1] meaning it should be applied before the weeds germinate. Because it is selective, it will kill grass and many common weeds without killing sensitive plants such as flowers, fruits, and vegetables.
References
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