Brady's reagent

Brady's reagent

A500/0530 Rights Managed

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Credit: ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Brady's reagent (2,4-dinitrophenylhydrazine) reacting with propanone in a test tube. Brady's reagent is used to indicate the presence of aldehydes or ketones in solutions. In the presence of aldehyde or ketone groups, yellow crystalline hydrazone derivatives form. This is a late stage of the reaction, for an early stage see A500/531.

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Keywords: 2 4-dinitrophenylhydrazone, brady's reagent, chemical, chemistry, crystal, crystals, equipment, indicator, one, orange, precipitate, precipitating, propanone, reacting, reaction, reagent, single, solution, test tube

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