2-Cyclopropen-1-one

Also known as: Cyclopropenone, cycloprop-2-en-1-one, Cyclopropene-3-one, 1-cycloprop-2-enone, 2-cyclopropene-1-one

2-Cyclopropen-1-one (CAS 2961-80-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C3H2O and a molecular weight of 54.04740 g/mol. Key properties include a boiling point of 106.2ºC at760mmHg, a density of 1.256g/cm3 and a flash point of 18.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2961-80-0
Jingsj CID: J-1346886-5
Molecular Formula: C₃H₂O
Molecular Weight: 54.04740 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	106.2ºC at760mmHg
Density	1.256g/cm3
Flash Point	18.2ºC
Exact Mass	54.01060
PSA	17.07000
LogP	0.12530
Vapor Pressure	28.6mmHg at 25°C
Refractive Index	1.543

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-Cyclopropen-1-one?

The CAS number of 2-Cyclopropen-1-one is 2961-80-0.

What are the molecular formula and molecular weight of 2-Cyclopropen-1-one?

2-Cyclopropen-1-one has molecular formula C3H2O and molecular weight 54.04740 g/mol.

What are the upstream and downstream products of 2-Cyclopropen-1-one?

For 2-Cyclopropen-1-one, Upstream Products: Tetrachlorocyclopropene, Maleic anhydride.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Cyclopropen-1-one (CAS 2961-80-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1346886-5 (accessed 2026-11-09).

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