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Cyclopropyl methyl ketone

Also known as: 1-Cyclopropylethanone, Acetylcyclopropane, CPMK, Methyl cyclopropyl ketone, Cyclopropylethanone, Acetyltrimethylene, NSC 2031, 1-Cyclopropyl-1-ethanone

Cyclopropyl methyl ketone (CAS 765-43-5) 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 <-70ºC, a boiling point of 114.2±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 21.1±0.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
765-43-5
Jingsj CID
J-1525137-3
Molecular Formula
C5H8O
Molecular Weight
84.116 g/mol
Category
Ketones
Last updated
11/3/2026
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Physicochemical Properties

Melting Point<-70ºC
Boiling Point114.2±8.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point21.1±0.0 °C
Exact Mass84.057518
PSA17.07000
LogP0.21
Vapor Pressure20.1±0.2 mmHg at 25°C
Refractive Index1.458

GHS Safety & Compliance

FlammableSignal word: Danger

Frequently Asked Questions

What is the CAS number of Cyclopropyl methyl ketone?

The CAS number of Cyclopropyl methyl ketone is 765-43-5.

What are the molecular formula and molecular weight of Cyclopropyl methyl ketone?

Cyclopropyl methyl ketone has molecular formula C5H8O and molecular weight 84.116 g/mol.

Is Cyclopropyl methyl ketone hazardous?

Cyclopropyl methyl ketone has GHS signal word Danger.

What are the upstream and downstream products of Cyclopropyl methyl ketone?

For Cyclopropyl methyl ketone, Upstream Products: 1-Cyclopropylethanol, 5-Chloro-2-pentanone, Dibromomethane; Downstream Products: L-Cyclopropylglycine, 5-Bromo-2-pentanone, Tert-butyl Pitavastatin.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Cyclopropyl methyl ketone (CAS 765-43-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1525137-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.