| Identification | Back Directory | [Name]
Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3- one,4,7-dichloro-3',6'-dihydroxy-2',4',5',7'- tetraiodo- | [CAS]
6859-68-3 | [Synonyms]
Solvent Red 47
C.I.Solvent Red 47:C.I.45435:1
Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3- one,4,7-dichloro-3',6'-dihydroxy-2',4',5',7'- tetraiodo- | [Molecular Formula]
C20H6Cl2I4O5 | [MOL File]
6859-68-3.mol | [Molecular Weight]
904.783 |
| Hazard Information | Back Directory | [Preparation]
4,7 – dichloro-fluorescein with iodine in potassium (or sodium) and the presence of copper chloride tetraiodide. | [Properties and Applications]
blue light red. Soluble in water for cherry red, no fluorescence. In concentrated sulfuric acid for brown light yellow, dilution after brown light red precipitation. Dye aqueous solution to join sodium hydroxide have carmine soluble precipitation
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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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General
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Insoluble
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Good
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