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| | D&CORANGENO.16 Basic information |
| Product Name: | D&CORANGENO.16 | | Synonyms: | D&CORANGENO.16;4',5'-Dibromo-3',6'-dihydroxy-2',7'-diiodospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one;C.I.45371;C.I.Solvent Orange 18;D and C Orange No.16;2-(4,5-Dibromo-2,7-diiodo-3-oxo-6-hydroxy-3H-xanthen-9-yl)benzoic acid;4',5'-dibromo-3',6'-dihydroxy-2',7'-diiodo-spiro[phthalan-1,9'-xanthen]-3-one;Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-diiodo- | | CAS: | 31544-98-6 | | MF: | C20H8Br2I2O5 | | MW: | 741.89 | | EINECS: | | | Product Categories: | | | Mol File: | 31544-98-6.mol |  |
| | D&CORANGENO.16 Chemical Properties |
| Boiling point | 628.1±55.0 °C(Predicted) | | density | 2.73±0.1 g/cm3(Predicted) | | pka | 7.09±0.20(Predicted) |
| | D&CORANGENO.16 Usage And Synthesis |
| Preparation | preparation??and?C.I. .Solvent Red 42?and similar (2,4-Dichlororesorcinol?(2 Moore) and?Phthalic anhydride?(1 Moore) with Sodium hydroxide extraction condensation, segregation out 2 ‘, 4 ‘, 5 ‘, 7 ‘- tetrachloro-fluorescein, then use hydrochloric acid acidification. | | Properties and Applications | brilliant orange. Insoluble in water, slightly soluble in alcohol, soluble in 5% sodium carbonate solution. In concentrated sulfuric acid to yellow, dilution have orange precipitation; In 10% sodium hydroxide solution for pink.
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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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Insoluble
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Dissolve
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| | D&CORANGENO.16 Preparation Products And Raw materials |
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