Cyclobutanone
Also known as: 1-Oxocyclobutane, Cyclobutyl ketone, 1-Cyclobutanone, Oxocyclobutane, cyclobutanon, cyclobytanone, cyclobutyloxy
Cyclobutanone (CAS 1191-95-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H6O and a molecular weight of 70.090 g/mol. Key properties include a melting point of -50.9 °C, a boiling point of 96.5±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 10.0±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.
- 1191-95-3
- Jingsj CID
- J-31172-8
- Molecular Formula
- C4H6O
- Molecular Weight
- 70.090 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -50.9 °C |
|---|---|
| Boiling Point | 96.5±0.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 10.0±0.0 °C |
| Exact Mass | 70.041862 |
| PSA | 17.07000 |
| LogP | -0.37 |
| Vapor Pressure | 43.4±0.1 mmHg at 25°C |
| Refractive Index | 1.463 |
| Additional Property | INSOLUBLE |
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 Cyclobutanone?
The CAS number of Cyclobutanone is 1191-95-3.
What are the molecular formula and molecular weight of Cyclobutanone?
Cyclobutanone has molecular formula C4H6O and molecular weight 70.090 g/mol.
Is Cyclobutanone hazardous?
Cyclobutanone has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
What are the upstream and downstream products of Cyclobutanone?
For Cyclobutanone, Upstream Products: Cyclobutanol, methylenecyclobutane, cyclopropane; Downstream Products: Ethyl 4-chlorobutyrate, 1-Isopropyl-2-pyrrolidinone, 1-Butylpyrrolidin-2-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. "Cyclobutanone (CAS 1191-95-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31172-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.