2',7'-DICHLOROFLUORESCEIN
2',7'-Dichlorofluorescein
CAS: 76-54-0
Molecular Formula: C20H10Cl2O5
2',7'-DICHLOROFLUORESCEIN - Names and Identifiers
| Name | 2',7'-Dichlorofluorescein |
| Synonyms | FLUORESCEIN 27 DICHLOROFLUORESCEIN TIMTEC-BB SBB008847 FLUORESCEIN DICHLORIDE DICHLOROFLUORESCEIN TS 2,7-DICHLOROFLUORESCEIN DICHLORO (R) FLUORESCEIN 2',7'-Dichlorofluorescein 2',7'-DICHLOROFLUORESCEIN |
| CAS | 76-54-0 |
| EINECS | 200-968-6 |
| InChI | InChI=1/C20H10Cl2O5/c21-13-5-11-17(7-15(13)23)27-18-8-16(24)14(22)6-12(18)19(11)9-3-1-2-4-10(9)20(25)26/h1-8,23H,(H,25,26) |
| InChIKey | NZVMJBGGAQSNLI-UHFFFAOYSA-N |
2',7'-DICHLOROFLUORESCEIN - Physico-chemical Properties
| Molecular Formula | C20H10Cl2O5 |
| Molar Mass | 401.2 |
| Density | 0.79g/mLat 20°C |
| Melting Point | 280°C (dec.)(lit.) |
| Boling Point | 514.77°C (rough estimate) |
| Flash Point | 12°C (53.6°F) |
| Water Solubility | Soluble in ethanol and methanol. Slightly dimethyl sulfoxide. Insoluble in water. |
| Solubility | Slightly soluble in water (0-1-1%), slightly soluble in DMSO, soluble in methanol and ethanol. |
| Vapor Presure | 6.63E-19mmHg at 25°C |
| Appearance | crystalline |
| Color | orange to red-brown, powder |
| Maximum wavelength(λmax) | ['509nm'] |
| BRN | 58009 |
| pKa | 4.46(at 25℃) |
| Storage Condition | room temp |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.5300 (estimate) |
| MDL | MFCD00005047 |
| Use | 2 ′,7 ′-dichlorofluorescein is an oxidation-sensitive fluorescent probe. 2 '7'-dichlorofluorescein diacetate is oxidized to 2 '7'-dichlorofluorescein in the presence of active oxygen (reactive oxygen species).) Fluorescent indicator. The adsorption indicator, such as the C1-point titrated by Ag-NO3, changes from yellow-green to light red. |
2',7'-DICHLOROFLUORESCEIN - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R36 - Irritating to the eyes R67 - Vapors may cause drowsiness and dizziness R11 - Highly Flammable |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S16 - Keep away from sources of ignition. |
| UN IDs | UN 1219 3/PG 2 |
| WGK Germany | 3 |
| RTECS | NT8050000 |
| TSCA | Yes |
| HS Code | 3204 19 00 |
2',7'-DICHLOROFLUORESCEIN - Reference
| Reference Show more | 1. Shi Rui, Zhang Xiaochao, Chen Wuyong. Determination of trace Cr (VI) in leather by fluorescence method [J]. Leather science and engineering, 2014,24(04):60-64. |
2',7'-DICHLOROFLUORESCEIN - Reference Information
| pH range of acid-base indicator discoloration | 4.0 (colorless) - 6.6 (green) |
| Main applications | electronic devices, sol-gel silica films, integrated circuits, photoresists, lithographic platforms, recording material, LED devices, photoconductors, Solid-state dye laser, lithographic printing platforms, inks, fluid pH sensors, emistive tests, chemical treatment of disease, phototherapeutic treatment of disease, photodynamic treatment of disease |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | ready-to-use chromatographic spray and dip developer. fluorescent indicator, adsorption indicator. |
| production method | prepared by condensation of resorcinol with phthalic anhydride alone or in the presence of ZnCl2 or H2SO4. |
Last Update：2024-04-10 22:29:15
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View History
2',7'-DICHLOROFLUORESCEIN
Automotive diesel oil
C.I. Disperse Black 9
CBZ-Pro-Osu
HPMA
C.I. Vat Blue 14
Vat Brown 5
PQR309
异丙醇钕(III)
28741-07-3
Automotive diesel oil
C.I. Disperse Black 9
CBZ-Pro-Osu
HPMA
C.I. Vat Blue 14
Vat Brown 5
PQR309
异丙醇钕(III)
28741-07-3