4',5'-Dibromofluorescein
Also known as: Solvent Red 72, CI 45370:1, D&C Orange No. 5, Eosinic acid, Japan Orange 201, Orange No. 201, 4',5'-dibromo-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4,5-Dibromofluorescein, C.I. 45370
4',5'-Dibromofluorescein (CAS 596-03-2) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H10Br2O5 and a molecular weight of 490.09800 g/mol. Key properties include a melting point of 270-273 °C(lit.), a boiling point of 633.7ºC at 760 mmHg, a density of 2.1 g/cm3 and a flash point of 337ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 596-03-2
- Jingsj CID
- J-30709-9
- Molecular Formula
- C20H10Br2O5
- Molecular Weight
- 490.09800 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 270-273 °C(lit.) |
|---|---|
| Boiling Point | 633.7ºC at 760 mmHg |
| Density | 2.1 g/cm3 |
| Flash Point | 337ºC |
| Exact Mass | 487.88900 |
| PSA | 75.99000 |
| LogP | 5.19080 |
| Refractive Index | 1.771 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
Activity & Biological Data
| Additional Information | [1]. Dongdong Yu, et al. An ultrasensitive stain for negative protein detection in SDS-PAGE via 4',5'-Dibromofluorescein. J Proteomics. 2017 Aug 8;165:21-25. |
|---|
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 4',5'-Dibromofluorescein?
The CAS number of 4',5'-Dibromofluorescein is 596-03-2.
What are the molecular formula and molecular weight of 4',5'-Dibromofluorescein?
4',5'-Dibromofluorescein has molecular formula C20H10Br2O5 and molecular weight 490.09800 g/mol.
Is 4',5'-Dibromofluorescein hazardous?
4',5'-Dibromofluorescein has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.
What are the upstream and downstream products of 4',5'-Dibromofluorescein?
For 4',5'-Dibromofluorescein, Upstream Products: Fluorescein, 2-(2,4-Dihydroxybenzoyl)benzoic acid, Resorcinol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4',5'-Dibromofluorescein (CAS 596-03-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30709-9 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.