Alizarin Dyes
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
This article from the 1928–1936 Soviet Great Medical Encyclopedia describes alizarin dyes as derivatives of hydroxyanthraquinone used in microtechnique. It details the properties of alizarin-sulfonic acid sodium, its staining characteristics for cell components, and its use as a chemical indicator.
Encyclopedia entry (1928–1936)
ALIZARIN DYES, derivatives of oxyanthraquinone. In microtechnique, mordant alizarin dyes are used especially often, e.g., sodium alizarin-sulfonate (Natr. alizarinsulfonic), a yellow powder soluble in water and alcohol. After mordanting with iron-ammonium alum, it gives a pink-yellow coloration to the protoplasm and the achromatic elements of the nucleus. It is used with counterstaining by Toluidinblau or 38G Krystallviolett in the investigation of neuroglia and mitochondria. In acidic solutions it has a yellow color, and in alkaline solutions a violet color; therefore, it is also used as an indicator.
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Cite this page
“Alizarin Dyes.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/alizarin-dyes/