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2. Tashiro's indicator - Wikipedia

   en.wikipedia.org/wiki/Tashiro's_indicator

   Download as PDF; Printable version ... Tashiro's indicator is a pH indicator (pH value: 4.4–6.2), mixed indicator composed of a solution of methylene blue (0. ...

3. 2,6-Dichloroquinone-4-chloroimide - Wikipedia

   en.wikipedia.org/wiki/2,6-Dichloroquinone-4...

   2,6-Dichloroquinone-4-chloroimide (Gibbs reagent) is an organic compound used as an colorimetric indicator to detect phenolic compounds. [1] Upon reaction with phenol itself, 2,6-dichlorophenolindophenol is formed, [ 2 ] a chemical that is used as a redox indicator .

4. Ehrlich's reagent - Wikipedia

   en.wikipedia.org/wiki/Ehrlich's_reagent

   Ehrlich's reagent or Ehrlich reagent is a reagent containing p-dimethylaminobenzaldehyde (DMAB) and thus can act as an indicator to presumptively identify indoles and urobilinogen. Several Ehrlich tests use the reagent in a medical test ; some are drug tests and others contribute to diagnosis of various diseases or adverse drug reactions .

5. Redox titration - Wikipedia

   en.wikipedia.org/wiki/Redox_titration

   A redox titration [1] is a type of titration based on a redox reaction between the analyte and titrant. It may involve the use of a redox indicator and/or a potentiometer. A common example of a redox titration is the treatment of a solution of iodine with a reducing agent to produce iodide using a starch indicator to help detect the endpoint.

6. Ferroxyl indicator solution - Wikipedia

   en.wikipedia.org/wiki/Ferroxyl_indicator_solution

   Corrosion of iron nail with coiled copper in medium with ferroxyl indicator. 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.

7. Alizarine Yellow R - Wikipedia

   en.wikipedia.org/wiki/Alizarine_Yellow_R

   This article about an organic compound is a stub. You can help Wikipedia by expanding it.

8. Calconcarboxylic acid - Wikipedia

   en.wikipedia.org/wiki/Calconcarboxylic_acid

   Calconcarboxylic acid (IUPAC name 3-hydroxy-4-[(2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2-carboxylic acid; commonly called Patton and Reeder's Indicator) is an azo dye that is used as an indicator for complexometric titrations of calcium with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium. [2]

9. Complexometric indicator - Wikipedia

   en.wikipedia.org/wiki/Complexometric_indicator

   A complexometric indicator is an ionochromic dye that undergoes a definite color change in presence of specific metal ions. [1] It forms a weak complex with the ions present in the solution, which has a significantly different color from the form existing outside the complex. Complexometric indicators are also known as pM indicators. [2]