CI 45350 manufacturers
- Fluorescin
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2025-06-07
- CAS:518-45-6
- Min. Order: 10g
- Purity: >95.00%
- Supply Ability: 10g
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| | CI 45350 Basic information |
| Product Name: | CI 45350 | | Synonyms: | KI202(1);KI202(2);Fluoresceine 94;3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one;3',6'-dihydroxyspiro[isobenzofuran-3,9'-xanthene]-1-one;C.I.Solvent Yellow 94:C.I.45350:1 | | CAS: | 518-45-6 | | MF: | C20H12O5 | | MW: | 332.31 | | EINECS: | | | Product Categories: | | | Mol File: | 518-45-6.mol |  |
| | CI 45350 Chemical Properties |
| Boiling point | 662.571±55.00 °C(Press: 760.00 Torr)(predicted) | | density | 1.535±0.10 g/cm3(Temp: 25 °C; Press: 760 Torr)(predicted) | | pka | 4.402±0.10(predicted) |
| | CI 45350 Usage And Synthesis |
| Preparation | Resorcinol and Phthalic anhydride alone or in the presence of sulfuric acid Zinc chloride or condensation, namely for fluorescein, again into free acid. | | Definition | ChEBI: Fluorescein (acid form) is a xanthene dye that is highly fluorescent and commonly used as a fluorescent tracer. It has a role as a radioopaque medium and a fluorescent dye. It is a xanthene dye, a member of benzoic acids, a hydroxy monocarboxylic acid, a cyclic ketone, a member of phenols and an organic heterotricyclic compound. | | Properties and Applications | yellow. Soluble in water and ethanol as yellow, with strong green fluorescence. In concentrated sulfuric acid to yellow, with weak fluorescence, dilution after yellow, with yellow precipitation. Dye aqueous solution to join sodium hydroxide color dark, with dark green fluorescence. The dye for C.I. Acid Yellow 73 free Acid. Used in cosmetics coloring.
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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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General
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No change
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| | CI 45350 Preparation Products And Raw materials |
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