Preparation
(a) 1,5-Dimethoxyanthracene-9,10-dione?and 1,8-Dimethoxyanthracene-9,10-dione?mixture dinitration, reduction, ethyl products and chemical. In the process of preparing sulphonated medium armor oxygen radicals hydrolysis, then into sodium salt; (b) in the presence of copper, Ethanamine?and 1,5-Dihydroxy-4,8-dibromoanthraquinon?condensation, and then sulphonated; (C)?1,5-Dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonic acid?and 1,8-Dihydroxy-9,10-anthraquinone-2,6-disulfonic acid?mixture brominated, and then in the presence of copper and Ethanamine?condensation.
Properties and Applications
blue. Slightly soluble in alcohol. The strong sulfuric acid to tan, diluted into a tan, then into purple.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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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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5-6
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3
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2-3
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2
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1
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1
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3
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2-3
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