Source: wikibot/ferroxyl-indicator-solution
= Ferroxyl indicator solution
{wiki=Ferroxyl_indicator_solution}
Ferroxyl indicator solution is a chemical indicator used primarily to test for the presence of iron ions, particularly ferrous iron (Fe²⁺) and ferric iron (Fe³⁺), in a solution. It is particularly useful in analytical chemistry and environmental testing. The Ferroxyl indicator itself typically contains a mixture of a phenolphthalein indicator and a specific reagent that can react with iron ions.