2,5-Diphenyl-1,4-benzoquinone

Also known as: 2,5-Diphenyl-p-benzoquinone, 2,5-Diphenylquinone, 2,5-Diphenyl-2,5-cyclohexadiene-1,4-dione, 2,5-Diphenyl-p-quinone

2,5-Diphenyl-1,4-benzoquinone (CAS 844-51-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C18H12O2 and a molecular weight of 260.287 g/mol. Key properties include a melting point of 215-217°C, a boiling point of 457.9±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 170.4±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 844-51-9
Jingsj CID: J-17864-3
Molecular Formula: C₁₈H₁₂O₂
Molecular Weight: 260.287 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	215-217°C
Boiling Point	457.9±45.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	170.4±25.7 °C
Exact Mass	260.083740
PSA	34.14000
LogP	4.67
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.642

Customs & Trade Information

HS Code	2914399090
Summary	2914399090. other aromatic 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 2,5-Diphenyl-1,4-benzoquinone?

The CAS number of 2,5-Diphenyl-1,4-benzoquinone is 844-51-9.

What are the molecular formula and molecular weight of 2,5-Diphenyl-1,4-benzoquinone?

2,5-Diphenyl-1,4-benzoquinone has molecular formula C18H12O2 and molecular weight 260.287 g/mol.

What are the upstream and downstream products of 2,5-Diphenyl-1,4-benzoquinone?

For 2,5-Diphenyl-1,4-benzoquinone, Upstream Products: 2-Phenyl-1,4-benzoquinone, Phenylboronic acid, 1,4-Benzoquinone; Downstream Products: 2,5-Diphenylhydroquinone, Triphenylphosphine oxide.

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. "2,5-Diphenyl-1,4-benzoquinone (CAS 844-51-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17864-3 (accessed 2026-11-09).

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