4',5'-DIBROMOFLUORESCEIN
Synonym(s):Solvent Red 72
- CAS NO.：596-03-2
- Empirical Formula: C20H10Br2O5
- Molecular Weight: 490.1
- MDL number: MFCD00005042
- EINECS: 209-876-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:07:02
What is 4',5'-DIBROMOFLUORESCEIN?
Chemical properties
orange powder
The Uses of 4',5'-DIBROMOFLUORESCEIN
4'',5''-Dibromofluorescein is a stain with an absorption maximum of 450 nm. Dyes and metabolites, Environmental Testing
What are the applications of Application
4′,5′-Dibromofluorescein is a stain with an absorption maximum of 450 nm
Preparation
Fluorescein (C.I. Acid Yellow 73, C.I. 45350) in the sodium hydroxide solution two bromination, and??made into a free acid form.
Safety Profile
Poison by ingestion and intravenous routes. An herbicide. When heated to decomposition it emits highly toxic fumes of NOx, CN-, and Br-. See also NITRILES.
Purification Methods
Crystallise it from aqueous 30% EtOH. [Beilstein 19/6 V 462.]
Properties and Applications
brilliant yellow light yellow. Slightly soluble in water for orange, with weak yellow fluorescence, soluble in ethanol for orange, with green yellow fluorescence, soluble in acetone peachblossom, with yellow fluorescence, soluble in Tetrahydrofurfuryl alcohol. In concentrated sulfuric acid to red light yellow, dilution after yellow brown, with orange precipitation. Dye aqueous solution to join sodium hydroxide as red edge; In the glycerol and liquid paraffin in good dispersibility. Used in medicines and cosmetics coloring.
Properties of 4',5'-DIBROMOFLUORESCEIN
| Melting point: | 270-273 °C(lit.) |
| Boiling point: | 633.7±55.0 °C(Predicted) |
| Density | 1.6743 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5010 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| form | powder to crystal |
| Colour Index | 45370 |
| pka | 8.14±0.20(Predicted) |
| color | Light yellow to Brown |
| Water Solubility | 153.49μg/L at 25℃ |
| Merck | 14,3022 |
| BRN | 57189 |
| CAS DataBase Reference | 596-03-2(CAS DataBase Reference) |
| EPA Substance Registry System | Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy- (596-03-2) |
Safety information for 4',5'-DIBROMOFLUORESCEIN
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H301:Acute toxicity,oral |
| Precautionary Statement Codes |
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
Computed Descriptors for 4',5'-DIBROMOFLUORESCEIN
4',5'-DIBROMOFLUORESCEIN manufacturer
Neelikon Food Dyes Chemicals Ltd
ARRAKIS INDUSTRIES LLP
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