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1,4-Diamino-2,3-dichloroanthraquinone

Also known as: Disperse Violet 28, Solvent Violet 31, Solvent Violet 51, 1,4-Diamino-2,3-dichloro-9,10-anthraquinone, 2,3-Dichloro-1,4-diaminoanthraquinone, Resolin Violet RL, LATYL VIOLET 2R, Arlisil Violet R2

1,4-Diamino-2,3-dichloroanthraquinone (CAS 81-42-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C14H8Cl2N2O2 and a molecular weight of 307.132 g/mol. Key properties include a melting point of 295°C, a boiling point of 601.4±55.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 317.5±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
81-42-5
Jingsj CID
J-35290-9
Molecular Formula
C14H8Cl2N2O2
Molecular Weight
307.132 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point295°C
Boiling Point601.4±55.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point317.5±31.5 °C
Exact Mass305.996277
PSA86.18000
LogP5.62
Vapor Pressure0.0±1.7 mmHg at 25°C
Refractive Index1.757

Frequently Asked Questions

What is the CAS number of 1,4-Diamino-2,3-dichloroanthraquinone?

The CAS number of 1,4-Diamino-2,3-dichloroanthraquinone is 81-42-5.

What are the molecular formula and molecular weight of 1,4-Diamino-2,3-dichloroanthraquinone?

1,4-Diamino-2,3-dichloroanthraquinone has molecular formula C14H8Cl2N2O2 and molecular weight 307.132 g/mol.

What are the upstream and downstream products of 1,4-Diamino-2,3-dichloroanthraquinone?

For 1,4-Diamino-2,3-dichloroanthraquinone, Upstream Products: 1,4-diaminoanthracene-9,10-diol, 1,4-Diaminoanthraquinone, Sulfuryl chloride; Downstream Products: 1,4-Diamino-2,3-dicyanoanthraquinone, 1,4-diamino-9,10-dioxoanthracene-2,3-disulfonic acid, Solvent Violet 59.

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

Last updated:

How to cite: Jingsj. "1,4-Diamino-2,3-dichloroanthraquinone (CAS 81-42-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35290-9 (accessed 2026-11-09).

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