5-Methyl-5-hexen-2-one
5-甲基-5-己烯-2-酮
Also known as: 5-methylhex-5-en-2-one, 2-Methyl-1-hexene-5-one, 5-Hexen-2-one, 5-methyl-, 5-Methyl-hex-5-en-2-one, FEMA 3365, MFCD00014995, UNII-6OVV4Q22O6, EINECS 221-807-6
5-Methyl-5-hexen-2-one (CAS 3240-09-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H12O and a molecular weight of 112.17000 g/mol. It is also known as 5-methylhex-5-en-2-one, 2-Methyl-1-hexene-5-one and 5-Hexen-2-one, 5-methyl-. Key properties include a boiling point of 147.3ºC at 760mmHg, a density of 0.824g/cm3 and a flash point of 38.7ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3240-09-3
- Jingsj CID
- J-18249-4
- Molecular Formula
- C7H12O
- Chinese Name
- 5-甲基-5-己烯-2-酮
- Molecular Weight
- 112.17000 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 147.3ºC at 760mmHg |
|---|---|
| Density | 0.824g/cm3 |
| Flash Point | 38.7ºC |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 5-Methyl-5-hexen-2-one?
The CAS number of 5-Methyl-5-hexen-2-one is 3240-09-3.
What are the molecular formula and molecular weight of 5-Methyl-5-hexen-2-one?
5-Methyl-5-hexen-2-one has molecular formula C7H12O and molecular weight 112.17000 g/mol.
Is 5-Methyl-5-hexen-2-one hazardous?
5-Methyl-5-hexen-2-one has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Methyl-5-hexen-2-one (CAS 3240-09-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18249-4 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.