Chemical Properties
Bluish-pink powder. Soluble in water.
Uses
Biological stain; colorant for inks, cellulosics,
foods, cosmetics, medicine (diagnostic aid).
Preparation
will Resorcinol and 4,5,6,7-Tetrachloroisobenzofuran-1,3-dione condensation, The resulting 4,5,6,7 – tetrachloro-fluorescein tetraiodide.
Properties and Applications
blue light red. Soluble in water for blue light yellow, no fluorescence, in concentrated sulfuric acid for brown, dilution after hot pink precipitation. Used in cosmetics coloring.
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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