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2-chloro-1-(4-methylphenyl)ethanone

Also known as: Chloromethyl p-tolyl ketone, 2-chloro-1-p-tolyl-ethanone, 2-chloro-4'-methylacetophenone, 4'-Methyl-2-chloroacetophenone, 4-(2-Chloroacetyl)toluene, 4-methylphenacyl chloride, 4-methylphenyl chloromethyl ketone, α-Chloro-4-methylacetophenone, p-Methyl-2-chloroacetophenone, p-methylphenacyl chloride

2-chloro-1-(4-methylphenyl)ethanone (CAS 4209-24-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H9ClO and a molecular weight of 168.62000 g/mol. Key properties include a melting point of 57.5°C (lit.), a boiling point of 258.5ºC at 760 mmHg, a density of 1.134 g/cm3 and a flash point of 125.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4209-24-9
Jingsj CID
J-43524-5
Molecular Formula
C9H9ClO
Molecular Weight
168.62000 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point57.5°C (lit.)
Boiling Point258.5ºC at 760 mmHg
Density1.134 g/cm3
Flash Point125.1ºC
Exact Mass168.03400
PSA17.07000
LogP2.41650
Refractive Index1.53

Customs & Trade Information

HS Code2914700090
SummaryHS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-chloro-1-(4-methylphenyl)ethanone?

The CAS number of 2-chloro-1-(4-methylphenyl)ethanone is 4209-24-9.

What are the molecular formula and molecular weight of 2-chloro-1-(4-methylphenyl)ethanone?

2-chloro-1-(4-methylphenyl)ethanone has molecular formula C9H9ClO and molecular weight 168.62000 g/mol.

What are the upstream and downstream products of 2-chloro-1-(4-methylphenyl)ethanone?

For 2-chloro-1-(4-methylphenyl)ethanone, Upstream Products: Chloroacetyl chloride, 4'-Methylacetophenone, 1-(4-Methylphenyl)ethanol; Downstream Products: 2-(4-methylphenyl)-2-oxoacetaldehyde, 2-(p-toluenesulfonyl)acetophenone, 4-Methylphenylacetic acid.

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

Last updated:

How to cite: Jingsj. "2-chloro-1-(4-methylphenyl)ethanone (CAS 4209-24-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43524-5 (accessed 2026-11-09).

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