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Eriochrome Black T is a complexometric indicator that is used in complexometric titrations, e.g. in the water hardness determination process. It is an azo dye.
Though the determination of calcium and magnesium by complexometric titration with standard solutions of disodium dihydrogen tetraacetate, utilising Eriochrome Black T as indicator is widely accepted and quite adequately understood, it, like other complexometric titration methods, suffers from the limitations of having an indistinct endpoint (where a photometric titrator is needed to provide ...
Complexometric titration (sometimes chelatometry) is a form of volumetric analysis in which the formation of a colored complex is used to indicate the end point of a titration. Complexometric titrations are particularly useful for the determination of a mixture of different metal ions in solution. An indicator capable of producing an ...
Eriochrome Black T: Chrome black Mordant black 11 14645 azo 1787-61-7: Erythrosin B: Red No. 3 Food red 14 Acid red 51 45430 fluorone 16423-68-0: Ethyl eosin Alcohol soluble eosin Solvent red 45 45386 fluorone 6359-05-3: Ethyl β-apo-8′-carotenoate Carophyll yellow Food orange 7: 40825 carotenoid 1109-11-1: Ethyl Green: 42590 triarylmethane ...
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.
The word "titration" descends from the French word titrer (1543), meaning the proportion of gold or silver in coins or in works of gold or silver; i.e., a measure of fineness or purity. Tiltre became titre, [4] which thus came to mean the "fineness of alloyed gold", [5] and then the "concentration of a substance in a given sample". [6]
Pages in category "Complexometric indicators". The following 10 pages are in this category, out of 10 total. This list may not reflect recent changes . Complexometric indicator.
After an average follow-up of almost 14 years, participants who compensated with the most extra sleep on the weekend — from a little over an hour to about 16 hours — were 19% less likely to ...