C.I. Direct red 42 химические свойства, назначение, производство
Подготовка
4-(4-Aminophenyl)benzenamine double nitriding, first and 6-Aminonaphthalene-1,3-disulfonic acid?coupling, and then in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Свойства и приложения
dark blue light red. Soluble in water for product red, slightly soluble in ethanol for shallow peachblossom. The strong sulfuric acid in blue, diluted for Shallow red time The dye solution to join strong hydrochloric acid for red light brown, have precipitation; Add thick sodium hydroxide solution for orange brown.
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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3
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5
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1
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1
|
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1-2
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C.I. Direct red 42 препаратная продукция и сырье
сырьё
препарат