4,4'-Dichlorobenzoin

Also known as: 1,2-bis(4-chlorophenyl)-2-hydroxyethanone, 2-Hydroxy-1,2-bis(4-chlorophenyl)ethanone, 1,2-bis(4-chlorophenyl)-2-hydroxyethan-1-one, α-Hydroxy-α-(4-chlorophenyl)-4'-chloroacetophenone, 4,4'-Dichlorobenzoin, 1,2-bis(p-chlorophenyl)-2-hydroxyethanone

4,4'-Dichlorobenzoin (CAS 4254-20-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H10Cl2O2 and a molecular weight of 281.13400 g/mol. Key properties include a boiling point of 439.1ºC at 760mmHg, a density of 1.379g/cm3 and a flash point of 219.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4254-20-0
Jingsj CID: J-1519925-4
Molecular Formula: C₁₄H₁₀Cl₂O₂
Molecular Weight: 281.13400 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	439.1ºC at 760mmHg
Density	1.379g/cm3
Flash Point	219.4ºC
Exact Mass	280.00600
PSA	37.30000
LogP	3.90970
Refractive Index	1.625

Customs & Trade Information

HS Code	2914700090
Summary	HS: 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 4,4'-Dichlorobenzoin?

The CAS number of 4,4'-Dichlorobenzoin is 4254-20-0.

What are the molecular formula and molecular weight of 4,4'-Dichlorobenzoin?

4,4'-Dichlorobenzoin has molecular formula C14H10Cl2O2 and molecular weight 281.13400 g/mol.

What are the upstream and downstream products of 4,4'-Dichlorobenzoin?

For 4,4'-Dichlorobenzoin, Upstream Products: 4-Chlorobenzaldehyde, 4,4'-Dichlorobenzil, acrylic acid methyl ester; Downstream Products: 4-(4-chlorophenyl)-4-oxobutanenitrile, Sodium 4-chlorobenzoate, 4,4'-Dichlorobenzil.

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. "4,4'-Dichlorobenzoin (CAS 4254-20-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1519925-4 (accessed 2026-11-09).

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