Preparation
3-Amino-2-hydroxybenzoic acid and 5-Amino-2-hydroxybenzoic acid diazotization, and Naphthalen-1-amine coupling, and its product to diazotization, and 4-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applications
red light black. Soluble in water for dark purple, slightly soluble in ethanol and Acetone. In concentrated sulfuric acid for SAP green, dilution after purple; In concentrated nitric acid for wine, and then into orange. Dye aqueous solution to join concentrated hydrochloric acid for sauce red; Join concentrated sodium hydroxide solution for dark blue to blue black.
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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
|
4
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6
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5
|
5
|
5
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5
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5
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AATCC
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Dry 3,wet 4
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6-7
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4
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5
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4-5
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5
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