2-Methylcyclopentanone
Also known as: 2-Methylcyclopentan-1-one, 2-methyl-cyclopentanon, 2-methyl-cyclopentanone, Cyclopentanone, 2-methyl-, EINECS 214-318-4, MFCD00001414, a-Methylcyclopentanone, alpha-Methylcyclopentanone, d,l-2-methylcyclopentanone, methylcyclopentone, rac-2-methylcyclopentanone, NSC105429, L5VTJ B1
2-Methylcyclopentanone (CAS 1120-72-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H10O and a molecular weight of 98.143 g/mol. Key properties include a melting point of -75ºC, a boiling point of 141.6±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 26.1±0.0 °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.
- 1120-72-5
- Jingsj CID
- J-19051-2
- Molecular Formula
- C6H10O
- Molecular Weight
- 98.143 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -75ºC |
|---|---|
| Boiling Point | 141.6±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 26.1±0.0 °C |
| Exact Mass | 98.073166 |
| PSA | 17.07000 |
| LogP | 0.69 |
| Vapor Pressure | 5.8±0.3 mmHg at 25°C |
| Refractive Index | 1.443 |
| Additional Property | soluble |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
Customs & Trade Information
| HS Code | 2914299000 |
|---|---|
| Summary | 2914299000. other cyclanic, cyclenic or cyclotherpenic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Methylcyclopentanone?
The CAS number of 2-Methylcyclopentanone is 1120-72-5.
What are the molecular formula and molecular weight of 2-Methylcyclopentanone?
2-Methylcyclopentanone has molecular formula C6H10O and molecular weight 98.143 g/mol.
Is 2-Methylcyclopentanone hazardous?
2-Methylcyclopentanone has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Methylcyclopentanone (CAS 1120-72-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19051-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.