5-Methyl-2-hepten-4-one
Also known as: Filbertone, (E)-5-Methyl-2-hepten-4-one, 2-Hepten-4-one, 5-methyl-, (2E)-, MFCD00792509, UNII:8K2S58736F
5-Methyl-2-hepten-4-one (CAS 81925-81-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H14O and a molecular weight of 126.196 g/mol. Key properties include a boiling point of 173.8±9.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 62.7±4.2 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 81925-81-7
- Jingsj CID
- J-42759-7
- Molecular Formula
- C8H14O
- Molecular Weight
- 126.196 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 173.8±9.0 °C at 760 mmHg |
|---|---|
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 62.7±4.2 °C |
| Exact Mass | 126.104462 |
| PSA | 17.07000 |
| LogP | 1.97 |
| Vapor Pressure | 1.2±0.3 mmHg at 25°C |
| Refractive Index | 1.430 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
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 5-Methyl-2-hepten-4-one?
The CAS number of 5-Methyl-2-hepten-4-one is 81925-81-7.
What are the molecular formula and molecular weight of 5-Methyl-2-hepten-4-one?
5-Methyl-2-hepten-4-one has molecular formula C8H14O and molecular weight 126.196 g/mol.
Is 5-Methyl-2-hepten-4-one hazardous?
5-Methyl-2-hepten-4-one has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
What are the upstream and downstream products of 5-Methyl-2-hepten-4-one?
For 5-Methyl-2-hepten-4-one, Upstream Products: Methyl 2-methylbutyrate, Oxalic acid, Allyl chloride; Downstream Products: 3-Methyl-4-heptanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Methyl-2-hepten-4-one (CAS 81925-81-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42759-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.