2',7'-Dichlorofluorescein
Also known as: 2',7'-Dichloro-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-(9H)xanthen]-3-one, 2',7'-dichloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one, 2',7'-Dichloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one, Dichlorofluorescein
2',7'-Dichlorofluorescein (CAS 76-54-0) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H10Cl2O5 and a molecular weight of 401.196 g/mol. Key properties include a melting point of 280 °C (dec.)(lit.), a boiling point of 634.4±55.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 337.4±31.5 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H319 — Causes serious eye irritation and H336 — May cause drowsiness or dizziness. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 76-54-0
- Jingsj CID
- J-30105-3
- Molecular Formula
- C20H10Cl2O5
- Molecular Weight
- 401.196 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 280 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 634.4±55.0 °C at 760 mmHg |
| Density | 1.8±0.1 g/cm3 |
| Flash Point | 337.4±31.5 °C |
| Exact Mass | 399.990540 |
| PSA | 75.99000 |
| LogP | 4.10 |
| Vapor Pressure | 0.0±1.9 mmHg at 25°C |
| Refractive Index | 1.797 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H319 — Causes serious eye irritation
- H336 — May cause drowsiness or dizziness
Activity & Biological Data
| Additional Information | [1]. Reiniers MJ, et al. Preparation and Practical Applications of 2',7'-Dichlorodihydrofluorescein in Redox Assays. Anal Chem. 2017 Apr 4;89(7):3853-3857. [2]. Xiuping Chen, et al. 2',7'-Dichlorodihydrofluorescein as a fluorescent probe for reactive oxygen species measurement: Forty years of application and controversy. Free Radic Res. 2010 Jun;44(6):587-604. |
|---|
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2',7'-Dichlorofluorescein?
The CAS number of 2',7'-Dichlorofluorescein is 76-54-0.
What are the molecular formula and molecular weight of 2',7'-Dichlorofluorescein?
2',7'-Dichlorofluorescein has molecular formula C20H10Cl2O5 and molecular weight 401.196 g/mol.
Is 2',7'-Dichlorofluorescein hazardous?
2',7'-Dichlorofluorescein has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H319 — Causes serious eye irritation; H336 — May cause drowsiness or dizziness.
What are the upstream and downstream products of 2',7'-Dichlorofluorescein?
For 2',7'-Dichlorofluorescein, Upstream Products: 2',7'-Dichlorodihydrofluorescein diacetate, Phthalic anhydride, 4-Chlororesorcinol; Downstream Products: Xanthene, 2',7'-Dichlorofluorescein diacetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2',7'-Dichlorofluorescein (CAS 76-54-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30105-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.