Preparation
8-Amino-5-(4-hydroxyphenylamino)naphthalene-2-sulfonic acidand aqueous Sodium polysulfide heating, in 107 ~ 108 ℃ under reflux 2 4 hours, will be part of the precipitation in the Sodium sulfide of dye solution, blowing air redeposition. This indophenolis from8-Amino-5-nitronaphthalene-2-sulfonic acidand where did5-Aminonaphthalene-2-sulfonic acidand where did4-Aminophenolwith Sodium hypochlorite oxidation of mixture, then use Sodium sulfide reduction and have to.
Properties and Applications
green light blue. Yellow brown flow liquid, pH value is 12.8, density 1.248, viscosity 11* 10-3 pa s.; No fallout. In the Sodium sulfide solution good solubility, olive, In concentrated sulfuric acid for the dark,diluted with dark blue.
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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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Fulling
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Persperation Fastness
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Soaping
|
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Moderate
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Severe
|
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ISO
|
3-4
|
4
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5-6
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3-4
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(Alkali)4-5
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4
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2
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AATCC
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5
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4
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6
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3
|
|
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3
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