Preparation
2-Amino-4,6-dinitrophenol diazotization, and 3′-Amino-4,4′-dimethylbenzenesulfonanilide?coupling.
Properties and Applications
bordeaux. Moderate soluble in water (for dark yellow red) and ethanol (for red brown). In concentrated sulfuric acid to red light purple, dilution after brown precipitation; In concentrated nitric acid for yellow brown solution; In a dilute hot sodium hydroxide solution for red brown solution. Dye aqueous solution to join concentrated hydrochloric acid have orange precipitation; Add sodium hydroxide as purple solution, and accompanied by precipitation.
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Standard
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Ironing Fastness
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Water
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Alkali
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Acid
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ISO
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3-4
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3-4
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4-5
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5
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4-5
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