Preparation
Bis (4 – (dimethylamino) phenyl) methanol and 1-Hydroxy-7-sulfo-2-naphthoic acid?condensation, its product in acetic acid, hydrochloric acid using Manganese dioxide oxidation.
Properties and Applications
brilliant purple. Soluble in water for Daisy blue, slightly soluble in ethanol to purple. In concentrated sulfuric acid for red purple, dilution after orange brown. Dye aqueous solution to join sodium hydroxide as purple
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Standard(Silk)
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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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ISO
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4-5
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3
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2-3
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5
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3-4
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5
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![N-[4-[(3-Carboxy-4-hydroxy-6-sulfonato-1-naphthalenyl)[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methylmethanaminium Structure](https://www.chemicalbook.com/CAS/GIF/6797-96-2.gif)