Preparation
2-Amino-4-chlorophenol diazotization, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling.
Properties and Applications
navy blue. Blue black with metallic luster of powder. Soluble in water for magenta, its solubility is 50 g/l (80 ℃), soluble in Cellosolve, right amount soluble in ethanol. In concentrated sulfuric acid for dark blue, dilution after magenta; In concentrated nitric acid for brown light red solution; In the sodium hydroxide solution for red light blue solution. Its aqueous solution and concentrated hydrochloric acid are magenta; Crowding sodium hydroxide solution for blue purple. Used for wool fabric dyeing, and can also be used to silk and nylon. Can be in wool fabric direct printing, but also can be used in the electrochemical aluminum coloring.
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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
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4-5
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6-7
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4
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4
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5
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5
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5
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AATCC
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4
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6
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3
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5
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4
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5
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