Preparation
4-Nitrobenzenamine diazo, in acid conditions coupled with 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid, 4-Aminobenzenesulfonic acid to diazo, in alkaline conditions and formation of single accidentally coupled nitrogen compounds.
Properties and Applications
blue and black. Soluble in water as dark blue to blue-black, easily soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid for dark olive green to, diluted as dark blue precipitation; In nitric acid for green precipitation, and then into a chestnut; In 10% of sodium hydroxide solution for light blue solution. In water solution to join strong hydrochloric acid for dark blue; Add sodium hydroxide solution as dark blue.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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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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5
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2
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4-5
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1-2
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2
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2-3
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AATCC
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6-7
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2
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1
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1
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3
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