La réaction de Schiff (nommée d'après Hugo Schiff) est une réaction de mise en évidence des aldéhydes. Une coloration magenta ou pourpre apparaît si la réaction est positive. La réaction doit se faire à froid et en milieu non-basique.
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Schiff — is a German surname meaning ship and may refer to: * Adam Schiff, American politician * András Schiff, Hungarian pianist * Don Schiff, composer, musician, most notable as NS/Stick, Chapman Stick and Electric bass player * Dorothy Schiff, owner… … Wikipedia
Schiff base — shif also Schiff s base n any of a class of bases of the general formula RR C=NR that are obtained typically by condensation of an aldehyde or ketone with a primary amine (as aniline) with elimination of water, that usu. polymerize readily if… … Medical dictionary
Schiff's reagent — shifs or Schiff reagent .shif n a solution of fuchsin decolorized by treatment with sulfur dioxide that gives a useful test for aldehydes because they restore the reddish violet color of the dye compare FEULGEN REACTION * * * aqueous fuchsin solu … Medical dictionary
Schiff'sreagent — Schiff s reagent (shĭfs) n. An aqueous solution of rosaniline and sulfurous acid used to test for the presence of aldehydes. [After HugoSchiff (1834 1915), German chemist.] * * * … Universalium
Schiff reaction — n a reaction that is used as a test for aldehydes and consists in the formation by them of a reddish violet color with a solution of fuchsin decolorized with sulfurous acid … Medical dictionary
Schiff test — The Schiff test invented [ Eine neue Reihe organischen Diaminen H. Schiff Justus Liebigs Ann Chemie 140, 92 137 1866 ] and named after Hugo Schiff is a chemical test for the detection of aldehydes [ Histology, cell and tissue biology 5th Ed.,… … Wikipedia
schiff reagent — noun Usage: usually capitalized S : a solution of fuchsine decolorized by treatment with sulfur dioxide that gives a useful test for aldehydes because they restore the reddish violet color of the dye compare feulgen reaction * * * /shif/, Chem. a … Useful english dictionary
Test du miroir d'argent — Réaction de Tollens La réaction de Tollens est une réaction caractéristique des aldéhydes. Ceci du fait des propriétés réductrices des aldéhydes, que n ont pas les cétones. Réactif de Tollens Pour l essentiel la solution de Tollens est un… … Wikipédia en Français
Schiff's reagent — noun Etymology: Hugo Schiff died 1915 German chemist Date: 1897 a solution of fuchsine decolorized by treatment with sulfur dioxide that gives a useful test for aldehydes because they restore the dye s color called also Schiff reagent compare… … New Collegiate Dictionary
Schiff reagent — /shif/, Chem. a solution of rosaniline and sulfurous acid in water, used to test for the presence of aldehydes. Also, Schiff s reagent. [1895 1900; named after Hugo Schiff, 1834 1915, German chemist] * * * … Universalium
