Cyclopentanone
Also known as: Adipic ketone, Ketocyclopentane, Ketopentamethylene, Cyclopentanon, Dumasin, FEMA 3910, Adipin ketone, Adipinketon, KETOCYCLOPENTANE, KETOPENTAMETHYLENE, cyclo-pentanone, cyclopentan-1-one, cyclopentan-5-one
Cyclopentanone (CAS 120-92-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H8O and a molecular weight of 84.116 g/mol. Key properties include a melting point of -51 °C, a boiling point of 130.5±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 30.6±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 120-92-3
- Jingsj CID
- J-44444-0
- Molecular Formula
- C5H8O
- Molecular Weight
- 84.116 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -51 °C |
|---|---|
| Boiling Point | 130.5±8.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 30.6±0.0 °C |
| Exact Mass | 84.057518 |
| PSA | 17.07000 |
| LogP | 0.20 |
| Vapor Pressure | 9.7±0.2 mmHg at 25°C |
| Refractive Index | 1.457 |
| Additional Property | PRACTICALLY INSOLUBLE |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
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 Cyclopentanone?
The CAS number of Cyclopentanone is 120-92-3.
What are the molecular formula and molecular weight of Cyclopentanone?
Cyclopentanone has molecular formula C5H8O and molecular weight 84.116 g/mol.
Is Cyclopentanone hazardous?
Cyclopentanone has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Cyclopentanone?
For Cyclopentanone, Upstream Products: Cyclopentanol, Furfuryl alcohol, Furfural; Downstream Products: 1,1-difluorocyclopentane, 2-Hydroxycyclopent-2-en-1-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cyclopentanone (CAS 120-92-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44444-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.