Bismarck Brown R
Also known as: Basic Brown 4, Vesuvin, CI 21010, 1,3-Benzenediamine, 4,4'-[(4-methyl-1,3-phenylene)bis(azo)]bis[6-methyl-, dihydrochloride, 2,4-Bis(2,4-diamino-5-methyl-1-benzenazo)toluene dihydrochloride, Bismarck Brown Y, Bismarck Brown G, Bismarkbrownr
Bismarck Brown R (CAS 5421-66-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H26Cl2N8 and a molecular weight of 461.39100 g/mol. Key properties include a melting point of 222ºC (dec.)(lit.), a boiling point of 729ºC at 760 mmHg and a flash point of 394.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5421-66-9
- Jingsj CID
- J-29742-7
- Molecular Formula
- C21H26Cl2N8
- Molecular Weight
- 461.39100 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 222ºC (dec.)(lit.) |
|---|---|
| Boiling Point | 729ºC at 760 mmHg |
| Flash Point | 394.7ºC |
| Exact Mass | 460.16600 |
| PSA | 153.52000 |
| LogP | 9.70020 |
| Appearance | Powder | Brown to Black |
| Refractive Index | 1.696 |
Activity & Biological Data
| Additional Information | [1]. Bushra Fatima, et al. Green synthesis of f-CdWO4 for photocatalytic degradation and adsorptive removal of Bismarck Brown R dye from water. Water Resources and Industry. Volume 22, December 2019, 100119. |
|---|
Customs & Trade Information
| HS Code | 3204130000 |
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Frequently Asked Questions
What is the CAS number of Bismarck Brown R?
The CAS number of Bismarck Brown R is 5421-66-9.
What are the molecular formula and molecular weight of Bismarck Brown R?
Bismarck Brown R has molecular formula C21H26Cl2N8 and molecular weight 461.39100 g/mol.
What are the upstream and downstream products of Bismarck Brown R?
For Bismarck Brown R, Upstream Products: 4-Methylbenzene-1,3-diamine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Bismarck Brown R (CAS 5421-66-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29742-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.