2,3-Dibromo-4-oxobut-2-enoic acid
Also known as: 2-Butenoic acid, 2,3-dibromo-4-oxo-, 2,3-dibromo-4-oxo-but-2-enoic acid, 2,3-dibromo-4-oxo-crotonic acid, (2Z)-2,3-dibromo-4-oxobut-2-enoic acid, NSC 193417, Dibrommaleinaldehydsaeure, 2,3-Dibrom-4-oxo-crotonsaeure
2,3-Dibromo-4-oxobut-2-enoic acid (CAS 21577-50-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H2Br2O3 and a molecular weight of 257.86500 g/mol. Key properties include a boiling point of 321.8ºC at 760mmHg, a density of 2.43g/cm3 and a flash point of 148.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21577-50-4
- Jingsj CID
- J-43535-8
- Molecular Formula
- C4H2Br2O3
- Molecular Weight
- 257.86500 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 321.8ºC at 760mmHg |
|---|---|
| Density | 2.43g/cm3 |
| Flash Point | 148.4ºC |
| Exact Mass | 255.83700 |
| PSA | 54.37000 |
| LogP | 1.27130 |
| Vapor Pressure | 5.99E-05mmHg at 25°C |
| Refractive Index | 1.625 |
Customs & Trade Information
| HS Code | 2918300090 |
|---|---|
| Summary | 2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,3-Dibromo-4-oxobut-2-enoic acid?
The CAS number of 2,3-Dibromo-4-oxobut-2-enoic acid is 21577-50-4.
What are the molecular formula and molecular weight of 2,3-Dibromo-4-oxobut-2-enoic acid?
2,3-Dibromo-4-oxobut-2-enoic acid has molecular formula C4H2Br2O3 and molecular weight 257.86500 g/mol.
What are the upstream and downstream products of 2,3-Dibromo-4-oxobut-2-enoic acid?
For 2,3-Dibromo-4-oxobut-2-enoic acid, Upstream Products: Furfural, 2-Furoic acid, Water; Downstream Products: 4,5-Dibromopyridazin-3-one, Malonic acid, Formic Acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,3-Dibromo-4-oxobut-2-enoic acid (CAS 21577-50-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43535-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.