Name:C.I.Mordant Red 49,C.I.18770
Molecular Structure: Single azo class
Molecular Weight: 491.41
CAS Registry Number:6655-99-8
Manufacturing Methods : 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazotization, with 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling, and then into chromium complex.
Properties and Applications: blue light red. Soluble in water for red light brown, soluble in ethanol and acetone. In concentrated sulfuric acid for dark orange, dilution after yellow brown, and accompanied by precipitation; In concentrated nitric acid for brown light olive; In a dilute sodium hydroxide solution for wine. Dye aqueous solution to join concentrated hydrochloric acid have orange precipitation.
|Standard||Ironing Fastness||Light Fastness||Fulling||Persperation Fastness||Soaping||Water|
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Chrome Red MGW( Industria Chimica Dott )