Furan-2,4(3H,5H)-dione
Also known as: Tetronic acid, Tetrahydrofuran-2,4-dione, 2,4-Dioxotetrahydrofuran, oxolane-2,4-dione, EINECS 225-617-4, MFCD00010086
Furan-2,4(3H,5H)-dione (CAS 4971-56-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H4O3 and a molecular weight of 100.073 g/mol. Key properties include a melting point of 139-140°C (dec.), a boiling point of 324.3±35.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 151.0±26.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4971-56-6
- Jingsj CID
- J-1993578-2
- Molecular Formula
- C4H4O3
- Molecular Weight
- 100.073 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 139-140°C (dec.) |
|---|---|
| Boiling Point | 324.3±35.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 151.0±26.0 °C |
| Exact Mass | 100.016045 |
| PSA | 43.37000 |
| LogP | -2.03 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.470 |
Customs & Trade Information
| HS Code | 2932190090 |
|---|---|
| Summary | 2932190090 other compounds containing an unfused furan ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Furan-2,4(3H,5H)-dione?
The CAS number of Furan-2,4(3H,5H)-dione is 4971-56-6.
What are the molecular formula and molecular weight of Furan-2,4(3H,5H)-dione?
Furan-2,4(3H,5H)-dione has molecular formula C4H4O3 and molecular weight 100.073 g/mol.
What are the upstream and downstream products of Furan-2,4(3H,5H)-dione?
For Furan-2,4(3H,5H)-dione, Upstream Products: Ethyl 4-bromoacetoacetate, Methyl bromoacetate; Downstream Products: 4-Methoxy-2(5H)-furanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Furan-2,4(3H,5H)-dione (CAS 4971-56-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993578-2 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.