Properties and Applications
red orange and brown. From benzene in crystallization out products for red brown crystallization, melting point 148 ℃. Soluble in ethanol, acetone and benzene. In concentrated sulfuric acid to yellow, dilution after bright yellow; In concentrated sodium hydroxide solution insoluble. Dye alcohol solution to join dilute hydrochloric acid for brown light red; Join dilute sodium hydroxide solution for brown light yellow. Used for oil, paraffin wax, printing ink, alcohol soluble paint color.
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Standard
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Light Fastness
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Heat-resistant(℃)
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water
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Sodium Carbonate(5%)
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Hydrochloric acid(5%)
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Melting point
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Stable
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ISO
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Poor
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Insoluble
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Good
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Good
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