4-Penten-2-one
Also known as: Allyl methyl ketone, Methyl allyl ketone, Vinyl acetone, Pent-4-en-2-one
4-Penten-2-one (CAS 13891-87-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H8O and a molecular weight of 84.11640 g/mol. Key properties include a melting point of 94 °C (lit.), a boiling point of 93.9ºC at 760mmHg, a density of 0.814g/cm3 and a flash point of 10.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13891-87-7
- Jingsj CID
- J-8050-2
- Molecular Formula
- C5H8O
- Molecular Weight
- 84.11640 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 94 °C (lit.) |
|---|---|
| Boiling Point | 93.9ºC at 760mmHg |
| Density | 0.814g/cm3 |
| Flash Point | 10.8ºC |
| Exact Mass | 84.05750 |
| PSA | 17.07000 |
| LogP | 1.15150 |
| Vapor Pressure | 48.5mmHg at 25°C |
| Refractive Index | 1.398 |
| Storage Conditions | 2-8°C |
Customs & Trade Information
| HS Code | 2914190090 |
|---|---|
| Summary | 2914190090 other acyclic ketones without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Penten-2-one?
The CAS number of 4-Penten-2-one is 13891-87-7.
What are the molecular formula and molecular weight of 4-Penten-2-one?
4-Penten-2-one has molecular formula C5H8O and molecular weight 84.11640 g/mol.
What are the upstream and downstream products of 4-Penten-2-one?
For 4-Penten-2-one, Upstream Products: Tributyl(1-ethoxyvinyl)stannane, Allyl chloride, 2-Acetylbutyrolactone; Downstream Products: 2,5-Hexanedione, 3-Penten-2-one, 4-Methyl-1-hepten-4-ol, >97.0%(GC).
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-Penten-2-one (CAS 13891-87-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8050-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.