Eosin B
曙红B (游离酸)
Also known as: 4',5'-Dibromo-2',7'-dinitrofluorescein, C.I. Acid Red 91 (free acid), Eosine BA, Eosine BNX, Saffrosine
Eosin B (CAS 56360-46-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H8Br2N2O9 and a molecular weight of 580.09400 g/mol. It is also known as 4',5'-Dibromo-2',7'-dinitrofluorescein, C.I. Acid Red 91 (free acid) and Eosine BA. Key properties include a melting point of 275ºC (dec.)(lit.), a boiling point of 663.6ºC at 760 mmHg and a flash point of 355.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 56360-46-4
- Jingsj CID
- J-1309323-1
- Molecular Formula
- C20H8Br2N2O9
- Chinese Name
- 曙红B (游离酸)
- Molecular Weight
- 580.09400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 275ºC (dec.)(lit.) |
|---|---|
| Boiling Point | 663.6ºC at 760 mmHg |
| Flash Point | 355.1ºC |
Frequently Asked Questions
What is the CAS number of Eosin B?
The CAS number of Eosin B is 56360-46-4.
What are the molecular formula and molecular weight of Eosin B?
Eosin B has molecular formula C20H8Br2N2O9 and molecular weight 580.09400 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Eosin B (CAS 56360-46-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1309323-1 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.