1-(Methylamino)-4-p-toluidinoanthraquinone

Also known as: Sudan Blue, Solvent Blue 11, 1-(Methylamino)-4-((4-methylphenyl)amino)anthraquinone, 1-(Methylamino)-4-[(4-methylphenyl)amino]-9,10-anthraquinone, 1-Methylamino-4-p-toluidino-anthraquinone, Oil Blue G Extra, C.I. Solvent Blue 11, C.I. 61525, 1-(p-Toluidino)-4-(methylamino)anthracene-9,10-dione, 1-(Methylamino)-4-[(4-methylphenyl)amino]anthracene-9,10-dione

1-(Methylamino)-4-p-toluidinoanthraquinone (CAS 128-85-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C22H18N2O2 and a molecular weight of 342.391 g/mol. Key properties include a boiling point of 575.1±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 203.2±30.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 128-85-8
Jingsj CID: J-22270-8
Molecular Formula: C₂₂H₁₈N₂O₂
Molecular Weight: 342.391 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	575.1±50.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	203.2±30.3 °C
Exact Mass	342.136841
PSA	58.20000
LogP	3.57
Vapor Pressure	0.0±1.6 mmHg at 25°C
Refractive Index	1.715

Customs & Trade Information

HS Code	2922399090
Summary	2922399090 other amino-aldehydes, amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1-(Methylamino)-4-p-toluidinoanthraquinone?

The CAS number of 1-(Methylamino)-4-p-toluidinoanthraquinone is 128-85-8.

What are the molecular formula and molecular weight of 1-(Methylamino)-4-p-toluidinoanthraquinone?

1-(Methylamino)-4-p-toluidinoanthraquinone has molecular formula C22H18N2O2 and molecular weight 342.391 g/mol.

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. "1-(Methylamino)-4-p-toluidinoanthraquinone (CAS 128-85-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22270-8 (accessed 2026-11-09).

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