Mordant red 19

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Mordant red 19
Mordant red 19.png
IUPAC name
5-Chloro-2-hydroxy-3-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylazo)-benzenesulfonic acid
Other names
C.I. 18735; Superchrome Red G; Magracrom Red 5G; Chrome Red 3G; Durochrome Red 5G; Eriochrome Red 4G; Metachrome Red 5G; Monochrome Red 5G; Solochrome Fast Red; Eriochromal Red 4G
3D model (JSmol)
ECHA InfoCard 100.042.925
Molar mass 408.81 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Mordant red 19 is an organic compound with the chemical formula C16H13ClN4O5S. It is classified as an azo dye.[1]

It is a mordant used in textile dyeing, usually in combination with chromium.[2] It is usually found as the sodium salt.

See also[edit]


  1. ^ Klaus Hunger, Peter Mischke, Wolfgang Rieper, Roderich Raue, Klaus Kunde, Aloys Engel: "Azo Dyes" in Ullmann’s Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim.doi:10.1002/14356007.a03_245.
  2. ^ Baumann, Hans; Federkiel, Wilhelm. Dyeing of natural and synthetic fibers. (1957) DE 1008253 

External links[edit]