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Other names Sodium 4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxonaphthalene-1-sulfonate; Solochrome Black T; ET-00; Erio T ... Eriochrome Black T ...
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 ...
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 ...
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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.
Studies in other animals or in humans did not show the same effect and there is no evidence showing FD&C Red No. 3 causes cancer in humans. ... (white) and iron oxides (red, brown and black ...
Common indicators are organic dyes such as Fast Sulphon Black, Eriochrome Black T, Eriochrome Red B, Patton Reeder, or Murexide. Color change shows that the indicator has been displaced (usually by EDTA) from the metal cations in solution when the end point has been reached.
In honor of Black Twitter's contribution, Stacker compiled a list of 20 slang words it brought to popularity, using the AAVE Glossary, Urban Dictionary, Know Your Meme, and other internet ...