| Company Name: |
CHEMICAL LAND21
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| Tel: |
82- 2 -783 - 8063 |
| Email: |
sales21@chemicalland21.com |
| Products Intro: |
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| | 2',4',5',7'-tetrachlorofluorescein Basic information |
| Product Name: | 2',4',5',7'-tetrachlorofluorescein | | Synonyms: | 2',4',5',7'-tetrachlorofluorescein;D and C Red No.26;Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 2',4',5',7'-tetrachloro-3',6'-dihydroxy-;Solvent Red 42;C.I.Solvent Red 42:C.I.45366;2',4',5',7'-tetrachloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one | | CAS: | 2320-38-9 | | MF: | C20H8Cl4O5 | | MW: | 470.09 | | EINECS: | | | Product Categories: | | | Mol File: | 2320-38-9.mol |  |
| | 2',4',5',7'-tetrachlorofluorescein Chemical Properties |
| Melting point | 296-305 °C(Solv: acetic acid (64-19-7)) | | Boiling point | 647.4±55.0 °C(Predicted) | | density | 1.87±0.1 g/cm3(Predicted) | | pka | 7.07±0.20(Predicted) |
| | 2',4',5',7'-tetrachlorofluorescein Usage And Synthesis |
| Preparation | 2,4-Dichlororesorcinol (2 Moore) and Phthalic anhydride (1 Moore) condensation, with Sodium hydroxide extraction segregating out 2 ‘, 4 ‘, 5 ‘, 7 ‘- tetrachlorofluorescein?(melting point of 296 ~ 305 ℃), then use Hydrochloric acid acidification. | | Properties and Applications | blue light pink. Insoluble in water, soluble in 10% sodium hydroxide solution.
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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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Poor
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Insoluble
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| | 2',4',5',7'-tetrachlorofluorescein Preparation Products And Raw materials |
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