Weidel's reaction

Weidel's reaction

A chemical reaction showing the presence of uric acid or xanthine bodies, or a test (now considered obsolete) based on that reaction. Invented by an Austrian chemist Hugo Weidel.

A solution of the suspected substance in chlorine water with a little nitric acid is evaporated in a water bath, and then exposed to the vapor of ammonia; the presence of xanthine is indicated when a red or purple color develops.


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

  • Weidel — Hugo, Austrian chemist, 1849–1899. See W. reaction …   Medical dictionary

  • Hugo Weidel — Infobox Scientist name = Hugo Weidel image width = caption = birth date = birth date|1849|11|13 birth place = Vienna Austria Hungary residence = nationality = death date = death date and age|1899|6|7|1849|11|13 death place = Vienna Austria… …   Wikipedia

  • Niacin — IUPAC name …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”