Preparation
3,3′-Dimethoxylbenzidine double nitriding, first and 4-Acetamido-5-hydroxynaphthalene-1,7-disulfonic acid?coupling, then with N-(3-amino-4-methylphenyl)acetamide?coupling.
Properties and Applications
blue. Soluble in water for red light blue, soluble in ethanol. The strong sulfuric acid as dark blue light in purple, blue after diluted precipitation. Dye with strong hydrochloric acid solution for violet black, precipitation; With strong sodium hydroxide solution for red light brown, have precipitation; Add 10% sodium hydroxide solution for red light purple.
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
|
Fading
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Stain
|
Fading
|
Stain
|
ISO
|
4
|
5
|
2
|
4
|
|
4
|
|
AATCC
|
5
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5
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2
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3
|
|
5
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