Ionization of Buthidazole, VEL 3510, Tebuthiuron, Fluridone, Metribuzin, and Prometryn

Aqueous solutions of buthidazole {3-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinone}, VEL 3510 {1-β,β-dimethoxyethyl-1-methyl-3-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl] urea}, tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl]-N,N′-dimethylurea}, flurid...

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Published in:Weed science 1980-09, Vol.28 (5), p.467-474
Main Author: Weber, J. B.
Format: Article
Language:English
Subjects:
Absorption spectra
Adsorption
Chemical bases
Herbicides
Ionization
Titration
Ultraviolet absorption
Ultraviolet spectrum
Wavelengths
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description Aqueous solutions of buthidazole {3-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinone}, VEL 3510 {1-β,β-dimethoxyethyl-1-methyl-3-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl] urea}, tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl]-N,N′-dimethylurea}, fluridone 1-methyl-3-phenyl-5-[3-trifluoromethyl)phenyl]-4(1H)-pyridinone, metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one], and prometryn [2,4-bis(isopropylamino)-6-(methylthio)-s-triazine] were spectrophotometrically titrated to obtain pKA values. Ionizing properties of the chemicals were compared with other related compounds reported in the literature. The pKA values for the six herbicides were 0.6 and 11.3, 0.9 and 9.0, 1.2, 1.7, 1.1, and 4.1, respectively.
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The pKA values for the six herbicides were 0.6 and 11.3, 0.9 and 9.0, 1.2, 1.7, 1.1, and 4.1, respectively.</description><subject>Absorption spectra</subject><subject>Adsorption</subject><subject>Chemical bases</subject><subject>Herbicides</subject><subject>Ionization</subject><subject>Titration</subject><subject>Ultraviolet absorption</subject><subject>Ultraviolet spectrum</subject><subject>Wavelengths</subject><issn>0043-1745</issn><issn>1550-2759</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1980</creationdate><recordtype>article</recordtype><recordid>eNp9kFtLAzEQhYMoWKs_QBDZH9DVmVz28qil1UJFoRd8W5Lupqa0iWR3H9pfb5YWXwSfhpzvnBlyCLlFeEDA9HEGwBmmXABAgsA_z0gPhYCYpiI_J70Oxx2_JFd1vQHAhGLeI8uJs-YgG-Ns5HT03DZfppQHt60G0XI0jZhAGETzSnWg9c4OovG29aZ0NjjeqsYb1R5MkKUtow_vdkHa22tyoeW2rm5Os08W49F8-BpP318mw6dpvKIJa2IFGeqcS0wTqoTItNSrTCvJM1XmINKgsPDsWCJYIpTKeM6Y5iVDynTO-gSPe1fe1bWvdPHtzU76fYFQdMUUf4oJmbtjZlM3zv8GePDRhAZ8f8RaukKuvamLxQzzjEJKReDBwE435U6FJtZVsXGtt-Gf_1z9AaC7dmU</recordid><startdate>19800901</startdate><enddate>19800901</enddate><creator>Weber, J. 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B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ionization of Buthidazole, VEL 3510, Tebuthiuron, Fluridone, Metribuzin, and Prometryn</atitle><jtitle>Weed science</jtitle><addtitle>Weed sci</addtitle><date>1980-09-01</date><risdate>1980</risdate><volume>28</volume><issue>5</issue><spage>467</spage><epage>474</epage><pages>467-474</pages><issn>0043-1745</issn><eissn>1550-2759</eissn><abstract>Aqueous solutions of buthidazole {3-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinone}, VEL 3510 {1-β,β-dimethoxyethyl-1-methyl-3-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl] urea}, tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadazol-2-yl]-N,N′-dimethylurea}, fluridone 1-methyl-3-phenyl-5-[3-trifluoromethyl)phenyl]-4(1H)-pyridinone, metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one], and prometryn [2,4-bis(isopropylamino)-6-(methylthio)-s-triazine] were spectrophotometrically titrated to obtain pKA values. Ionizing properties of the chemicals were compared with other related compounds reported in the literature. The pKA values for the six herbicides were 0.6 and 11.3, 0.9 and 9.0, 1.2, 1.7, 1.1, and 4.1, respectively.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S004317450006104X</doi><tpages>8</tpages></addata></record>
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subjects Absorption spectra
Adsorption
Chemical bases
Herbicides
Ionization
Titration
Ultraviolet absorption
Ultraviolet spectrum
Wavelengths
title Ionization of Buthidazole, VEL 3510, Tebuthiuron, Fluridone, Metribuzin, and Prometryn
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