Mordant red 19 is an organic compound with the chemical formula C16H13ClN4O5S. It is classified as an azo dye.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..
It is a mordant used in textile dyeing, usually in combination with chromium. It is usually found as the sodium salt.
See also Alizarin List of colors
References
External links Google images of Mordant Red 19