Complexometric indicator: Difference between revisions

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A '''complexometric indicator''' is an [[ionochromism|ionochromic]] [[dye]] that undergoes a definite color change in presence of specific metal [[ion]]s. It forms a weak [[complex (chemistry)|complex]] with the ions present in the solution, which has a significantly different color thanfrom the form existing outside of the complex.

==Complexometric titration==

In [[analytical chemistry]], complexometric [[indicator]]s are used in [[complexometric titration]] to indicate the exact moment when all the metal ions in the solution are sequestered by a [[chelating agent]] (most usually [[EDTA]]). Such indicators are also called '''metallochromic indicators'''.