Preparation
commonly known as yellow, purple hormone (Flavopurpurin). 9,10-Dioxo-9,10-dihydroanthracene-2,6-disulfonic acid?under pressure and Sodium hydroxide and Potassium chlorate and Sodium nitrate or Potassium nitrate heating, and at the same time will be generated 2, 6 – dihydroxyanthraquinone separation open.
Properties and Applications
dark red (chromium). Soluble in hot ethanol and Cellosolve, slightly soluble in Acetone, cold ethanol, benzene, Chloroform, insoluble in Stout solvent. In concentrated sulfuric acid to dark brown, dilution after yellow orange precipitation.
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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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AATCC
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Dry 2,wet 5
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7
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2
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5
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4
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