Preparation
4-Aminobenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupled to compounds (A); 4-Nitrobenzenamine diazo, coupled with 2-Hydroxybenzoic acid, and then will the nitro reduction for amino, compound (B). Then will molecules of the A and B mixture light gasification.
Properties and Applications
red light yellow. Soluble in water for golden brown, slightly soluble in alcohol. The strong sulfuric acid for blu-ray red, diluted becomes shallow, with brown precipitation. The dye solution to join strong hydrochloric acid have sauce red precipitate; Add thick sodium hydroxide solution with gold orange precipitation. Used for cellulose fabric, silk, polyamide fiber fabric dyeing and printing, paper color
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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3
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4
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5
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2-3
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2
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AATCC
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5
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5
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4
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1
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3
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