Description

4-[[3-(Acetylamino)-4-Methylphenyl]Amino]-1-Amino-9,10-Dihydro-9,10-Dioxoanthracene-2-Sulphonic Acid is a specialized anthraquinone derivative, valued for its role as a key intermediate in the synthesis of high-performance dyes and pigments. Its molecular structure, featuring both amino and sulphonic acid groups, provides excellent chromophoric properties and solubility characteristics. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant and stable colorants.

Application

• Primary intermediate in the synthesis of anthraquinone-based disperse dyes for synthetic fibers like polyester.
• Key precursor for manufacturing high-grade pigments used in inks, paints, and plastics.
• Used in research and development of functional dyes for specialized applications, including optical data storage.
• Intermediate in the production of dyes for automotive and industrial coatings requiring high lightfastness.
• Starting material for reactive dye synthesis in the textile industry.
• Used in the development of colored polymers and masterbatches.

Basic Information

Product Name	4-[[3-(Acetylamino)-4-Methylphenyl]Amino]-1-Amino-9,10-Dihydro-9,10-Dioxoanthracene-2-Sulphonic Acid
CAS No.	73309-50-9
Molecular Formula	C23H19N3O6S
Molecular Weight	465.48 g/mol
Synonyms	1-Amino-4-[[3-(acetylamino)-4-methylphenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid; 1-Amino-4-[(3-acetamido-4-methylphenyl)amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulfonic acid; Disperse Blue 291:1 intermediate; Anthraquinone dye intermediate CAS 73309-50-9; 2-Anthracenesulfonic acid, 1-amino-4-[[3-(acetylamino)-4-methylphenyl]amino]-9,10-dihydro-9,10-dioxo-
EINECS	Contact for details

Quality Control

Our production of this anthraquinone intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF Titration)	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.