Description

4-[[(4-Amino-9,10-Dihydro-9,10-Dioxo-1-Anthryl)Amino]Sulphonyl]Toluene-3-Sulphonic Acid is a specialized anthraquinone derivative with a complex molecular structure, serving as a key intermediate in the synthesis of high-performance dyes and pigments. Its value lies in providing the chromophoric backbone and functional groups necessary for producing vivid, lightfast colors with excellent application properties. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to develop advanced coloring agents.

Application

• Primary intermediate for the synthesis of high-grade anthraquinone-based dyes, particularly for textile fibers like polyester and nylon.
• Key precursor in the production of specialized pigments for inks, coatings, and plastics requiring superior color strength and stability.
• Used in research and development of functional dyes for non-textile applications, including optical data storage and liquid crystal displays.
• Intermediate for creating reactive dyes, where its sulphonic acid group enhances water solubility and fiber affinity.
• Building block in organic synthesis for more complex polycyclic aromatic compounds with potential electronic or photonic properties.

Basic Information

Product Name	4-[[(4-Amino-9,10-Dihydro-9,10-Dioxo-1-Anthryl)Amino]Sulphonyl]Toluene-3-Sulphonic Acid
CAS No.	71411-71-7
Molecular Formula	C21H16N2O7S2
Molecular Weight	472.49 g/mol
Synonyms	4-[(4-Amino-9,10-dihydro-9,10-dioxo-1-anthracenyl)aminosulfonyl]toluene-3-sulfonic acid; 1-Amino-4-[(4-sulfo-2-methylphenyl)amino]-9,10-anthraquinone-2-sulfonic acid; 1-Amino-4-(4-sulfo-o-toluidino)anthraquinone-2-sulfonic acid; Anthraquinone Blue Intermediate; Acid Blue Dye Intermediate; CAS 71411-71-7; 4-[[(4-Amino-9,10-dihydro-9,10-dioxo-1-anthryl)amino]sulfonyl]toluene-3-sulfonic acid
EINECS	Contact for details

Quality Control

Our production of this anthraquinone intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, containers should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Ash Content	≤ 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.