delta-Valerolactone
Also known as: 5-valerolactone, Tetrahydro-2H-pyran-2-one, oxan-2-one, 4-pentanolide, Tetrahydro-2-pyranone, 2H-Pyran-2-one, tetrahydro-, delta-valerolactone, δ-valerolactone
delta-Valerolactone (CAS 542-28-9) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C5H8O2 and a molecular weight of 100.116 g/mol. Key properties include a melting point of -13 °C, a boiling point of 218.0±8.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 100.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 542-28-9
- Jingsj CID
- J-1427120-7
- Molecular Formula
- C5H8O2
- Molecular Weight
- 100.116 g/mol
- Category
- Esters
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -13 °C |
|---|---|
| Boiling Point | 218.0±8.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 100.0±0.0 °C |
| Exact Mass | 100.052429 |
| PSA | 26.30000 |
| LogP | -0.20 |
| Additional Property | 3.45 (vs air) |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.440 |
| Additional Property | miscible |
GHS Safety & Compliance
- H318 — Causes serious eye damage
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 delta-Valerolactone?
The CAS number of delta-Valerolactone is 542-28-9.
What are the molecular formula and molecular weight of delta-Valerolactone?
delta-Valerolactone has molecular formula C5H8O2 and molecular weight 100.116 g/mol.
Is delta-Valerolactone hazardous?
delta-Valerolactone has GHS signal word Danger and hazard statements H318 — Causes serious eye damage.
What are the upstream and downstream products of delta-Valerolactone?
For delta-Valerolactone, Upstream Products: 5-Hydroxypentanoic acid, Tetrahydropyran, Cyclopentanone; Downstream Products: 5,6-Dihydro-2H-pyran-2-one, 1-Benzylpiperidin-2-one, N-Vinyl-2-piperidone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "delta-Valerolactone (CAS 542-28-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1427120-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.