2-Chloro-1,4-dihydroxyanthraquinone

2-氯-1,4-二羟基蒽醌

Also known as: 2-Chloroquinizarin, 2-Chloro-1,4-dihydroxy-9,10-anthracenedione, NSC 4995, Quinizarin, 2-chloro-, 2-chloro-1,4-dihydroxyanthracene-9,10-dione

2-Chloro-1,4-dihydroxyanthraquinone (CAS 81-53-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C14H7ClO4 and a molecular weight of 274.65600 g/mol. It is also known as 2-Chloroquinizarin, 2-Chloro-1,4-dihydroxy-9,10-anthracenedione and NSC 4995. Key properties include a boiling point of 489.2ºC at 760 mmHg, a density of 1.636g/cm3 and a flash point of 249.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 81-53-8
Jingsj CID: J-1386889-3
Molecular Formula: C₁₄H₇ClO₄
Chinese Name: 2-氯-1,4-二羟基蒽醌
Molecular Weight: 274.65600 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	489.2ºC at 760 mmHg
Density	1.636g/cm3
Flash Point	249.7ºC

Frequently Asked Questions

What is the CAS number of 2-Chloro-1,4-dihydroxyanthraquinone?

The CAS number of 2-Chloro-1,4-dihydroxyanthraquinone is 81-53-8.

What are the molecular formula and molecular weight of 2-Chloro-1,4-dihydroxyanthraquinone?

2-Chloro-1,4-dihydroxyanthraquinone has molecular formula C14H7ClO4 and molecular weight 274.65600 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Chloro-1,4-dihydroxyanthraquinone (CAS 81-53-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1386889-3 (accessed 2026-10-22).

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