4-Hydroxy-6-methyl-2-pyrone
Also known as: Triacetate lactone, Triacetic acid lactone, 4-Hydroxy-6-methyl-2H-pyran-2-one, 4-Hydroxy-6-methylpyran-2-one, 6-Methyl-4-hydroxy-2-pyrone, 6-Methyl-4-hydroxy-2-pyranone, NSC 34625, 4-Hydroxy-6-methyl-2-oxo-2H-pyran
4-Hydroxy-6-methyl-2-pyrone (CAS 675-10-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H6O3 and a molecular weight of 126.11 g/mol. Key properties include a melting point of 188-190 °C (dec.)(lit.), a boiling point of 239.1±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 108.7±20.1 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 675-10-5
- Jingsj CID
- J-24197-4
- Molecular Formula
- C6H6O3
- Molecular Weight
- 126.11 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 188-190 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 239.1±40.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 108.7±20.1 °C |
| Exact Mass | 126.031693 |
| PSA | 50.44000 |
| LogP | 0.15 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.561 |
| Additional Property | 8.60 g/L (20 ºC) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 4-Hydroxy-6-methyl-2-pyrone?
The CAS number of 4-Hydroxy-6-methyl-2-pyrone is 675-10-5.
What are the molecular formula and molecular weight of 4-Hydroxy-6-methyl-2-pyrone?
4-Hydroxy-6-methyl-2-pyrone has molecular formula C6H6O3 and molecular weight 126.11 g/mol.
Is 4-Hydroxy-6-methyl-2-pyrone hazardous?
4-Hydroxy-6-methyl-2-pyrone has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4-Hydroxy-6-methyl-2-pyrone?
For 4-Hydroxy-6-methyl-2-pyrone, Upstream Products: 1-Phenyl-1-trimethylsiloxyethylene, Malonyl chloride, Dehydroacetic acid; Downstream Products: Yangonin, 4-Hydroxy-6-methyl-3-nitro-2(1H)-pyridinone, 1,3-Pentadiene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Hydroxy-6-methyl-2-pyrone (CAS 675-10-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24197-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.