Preparation
6-Aminonaphthalene-2-sulfonic acid diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, O-Methylaniline diazo, and coupled product matches.
Properties and Applications
red. Soluble in water for yellow light red, soluble in soluble fiber element, insoluble in organic solvents. The strong sulfuric acid to red light purple, diluted red for yellow light. The dye solution to join sulfuric acid 10% color; Add thick sodium hydroxide solution change to blue and into a dark red.
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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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AATCC
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5
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5
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4
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2
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3
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