4-(3-chlorophenyl)but-3-en-2-one

3-氯苯亚甲基丙酮

Also known as: 3-chlorobenzylideneacetone, 3-buten-2-one,4-(3-chlorophenyl)-, 4-(3-Chlorophenyl)-3-buten-2-one, m-chlorobenzalacetone, m-chlorobenzylideneacetone, (3E)-4-(3-chlorophenyl)but-3-en-2-one, 3-chlorobenzalacetone, 1-(3-chlorophenyl)but-1-en-3-one

4-(3-chlorophenyl)but-3-en-2-one (CAS 20766-36-3) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C10H9ClO and a molecular weight of 180.63100 g/mol. It is also known as 3-chlorobenzylideneacetone, 3-buten-2-one,4-(3-chlorophenyl)- and 4-(3-Chlorophenyl)-3-buten-2-one. Key properties include a boiling point of 302.9ºC at 760mmHg, a density of 1.157g/cm3 and a flash point of 149.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20766-36-3
Jingsj CID
J-31977-7
Molecular Formula
C10H9ClO
Chinese Name
3-氯苯亚甲基丙酮
Molecular Weight
180.63100 g/mol
Category
Solvents
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point302.9ºC at 760mmHg
Density1.157g/cm3
Flash Point149.1ºC

Frequently Asked Questions

What is the CAS number of 4-(3-chlorophenyl)but-3-en-2-one?

The CAS number of 4-(3-chlorophenyl)but-3-en-2-one is 20766-36-3.

What are the molecular formula and molecular weight of 4-(3-chlorophenyl)but-3-en-2-one?

4-(3-chlorophenyl)but-3-en-2-one has molecular formula C10H9ClO and molecular weight 180.63100 g/mol.

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

Last updated:

How to cite: Jingsj. "4-(3-chlorophenyl)but-3-en-2-one (CAS 20766-36-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31977-7 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.