Abstract

Aus spektralphotometrischen und Elektrophorese-Untersuchungen geht hervor, das bei Toluidinblau 0 und Nilblauchlorid im physiologischen pH-Bereich vorwiegend einwertige Kationen vorliegen. Nach eigenen Messungen betragen die Dissoziationskonstanten zwischen einwertigem Kation und Farbbasenmolekul fur Toluidinblau 0 1,74 · 10−12 (pKa=11,76) und fur Nilblauchlorid 2,81 · 10−10 (pKa=9,55).

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