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Ferroxyl indicator, or rust indicator, is a solution containing potassium hexacyanoferrate(III), phenolphthalein and sodium chloride. It turns blue in the presence of Fe 2+ ions, and pink in the presence of hydroxide (OH − ) ions.
In conclusion I beleive that ferroxyl indicator solution actually contains both potassium ferrocyanide and phenolphthalein, however it is an indicator for Fe +3 (ferric Iron(III)) ions. I would agree, and I have edited the article accordingly: I will try to find a reference to be sure. Physchim62 08:03, 23 February 2006 (UTC)
Potassium ferricyanide is also one of two compounds present in ferroxyl indicator solution (along with phenolphthalein) that turns blue (Prussian blue) in the presence of Fe 2+ ions, and which can therefore be used to detect metal oxidation that will lead to rust.
Corrosion of an iron nail wrapped in bright copper wire, showing cathodic protection of copper; a ferroxyl indicator solution shows colored chemical indications of two types of ions diffusing through a moist agar medium.
Other potential tests include an esophagram (or barium swallow), which involves swallowing a contrast solution and tablet to examine the anatomy of the esophagus and mortality of the esophagus and ...
PH indicators (1 C, 48 P) Pages in category "Chemical tests" ... Ferroxyl indicator solution; Flame test; Fluorescein diacetate hydrolysis; Folin–Ciocalteu reagent;
A new opioid-free pain medication was approved by the U.S. Food and Drug Administration (FDA) on Thursday, marking a non-addictive alternative for patients. Journavx (suzetrigine), made by Vertex ...
The market is flooded with calming aids for cats and dogs, but what about our more exotic pets? Stress manifests differently in our scaled, finned, feathered, and little furry (think rodents) friends.