Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidand coupled the product of three, and then and 2-Hydroxybenzoic acid coupling.
Properties and Applications
dark green. Soluble in water for the green, slightly soluble in ethanol, acetone, soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid as dark blue light in purple, for dark olive green after diluted. The dye solution to join strong hydrochloric acid have blue light green precipitation; Add thick sodium hydroxide solution have yellow olive green precipitation; Add 10% sodium hydroxide solution for SAP green.
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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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4
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3
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3
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2
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2
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AATCC
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4
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4
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2-3
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2
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2
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