alpha-pyrone
Also known as: 2H-Pyran-2-one, 2-Pyrone, Coumalin, cumalin, pyran-2-one, 2-Pyranone
alpha-pyrone (CAS 504-31-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H4O2 and a molecular weight of 96.08410 g/mol. Key properties include a melting point of 41860ºC, a boiling point of 102-103ºC20 mm Hg(lit.), a density of 1.192g/cm3 and a flash point of 89.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 504-31-4
- Jingsj CID
- J-1361457-7
- Molecular Formula
- C5H4O2
- Molecular Weight
- 96.08410 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 41860ºC |
|---|---|
| Boiling Point | 102-103ºC20 mm Hg(lit.) |
| Density | 1.192g/cm3 |
| Flash Point | 89.2ºC |
| Exact Mass | 96.02110 |
| PSA | 30.21000 |
| LogP | 0.63980 |
| Refractive Index | n20/D 1.53(lit.) |
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 alpha-pyrone?
The CAS number of alpha-pyrone is 504-31-4.
What are the molecular formula and molecular weight of alpha-pyrone?
alpha-pyrone has molecular formula C5H4O2 and molecular weight 96.08410 g/mol.
What are the upstream and downstream products of alpha-pyrone?
For alpha-pyrone, Upstream Products: Pyrrolidine, N-(3-Acetyl-4-hydroxyphenyl)acetamide, Coumalic acid; Downstream Products: 5-Bromo-2H-pyran-2-one, 3-Bromo-2H-pyran-2-one, 2-Phenylbenzoxazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "alpha-pyrone (CAS 504-31-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1361457-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.