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- W2000551129 abstract "The equilibrium constants of the complexation reactions of Cr(VI), Mo(VI) and W(VI) with 8-hydroxyquinoline-5-sulphonic acid (OXS), 7-phenylazo-8-hydroxyquinoline-5-sulphonic acid (PAZOXS), 7-(4-sulphophenylazo)-8-hydroxyquinoline-5-sulphonic acid (SPAZOXS) and 7-(4-sulphonaphthylazo)-8-hydroxyquinoline-5-sulphonic acid (SNAZOXS) have been determined by potentiometric pH titration. The values in the case of chromate are different from those for molybdate and tungstate. The order of stabilities is OXS > PAZOXS > SPAZOXS > SNAZOXS. Die Gleichgewichtskonstanten der Komplexbildungsreaktionen von Cr(VI), Mo(VI) und W(VI) mit 8-Hydroxychinolin-5-sulfonsäure (OXS), 7-Phenylazo-8-hydroxychinolin-5-sulfonsäure (PAZOXS), 7-(4-Sulfophenylazo)-8-hydroxychinolin-5-sulfonsäure (SPAZOXS) und 7-(4-Sulfonaphthylazo)-8-hydroxychinolin-5-sulfonsäure (SNAZOXS) wurden durch potentiometrische pH-Titration ermittelt. Die Werte für Chromat sind von denen für Molybdat und Wolframat verschieden. Die Reihenfolge der Stabilitäten ist OXS > PAZOXS > SPAZOXS > SNAZOXS. On a déterminé par titrage pH potentiométrique les constantes d'équilibre des réactions de complexation de Cr(VI), Mo(VI) et W(VI) avec l'acide 8-hydroxyquinoléine 5-sulfonique (OXS), l'acide 7-phénylazo 8-hydroxyquinoléine 5-sulfonique (PAZOXS), l'acide 7-(4-sulfophénylazo) 8-hydroxyquinoléine 5-sulfonique (SPAZOXS) et l'acide 7-(4-sulfonaphtylazo) 8-hydroxyquinoléine 5-sulfonique (SNAZOXS). Les valeurs dans le cas du chromate sont différentes de celles du molybdate et du tungstate. L'ordre des stabilités est OXS > PAZOXS > SPAZOXS > SNAZOXS." @default.
- W2000551129 created "2016-06-24" @default.
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- W2000551129 date "1969-01-01" @default.
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- W2000551129 title "Potentiometric studies of the complexes of chromium(VI), molybdenum(VI) and tungsten(VI) with some Azoxine S dyes" @default.
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- W2000551129 doi "https://doi.org/10.1016/0039-9140(69)80246-8" @default.
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