Description

7-Amino-3-[[4-[(4-Chloro-2-Sodiosulfophenyl)Azo]-3-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a critical precursor for synthesizing a range of vibrant and stable direct and reactive dyes. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-quality, colorfast pigments.

Application

• Primary intermediate for the synthesis of direct dyes used in cotton, viscose, and paper coloring.
• Key building block in the production of high-performance reactive dyes for textile printing and dyeing.
• Used in the manufacture of leather dyes, providing deep, uniform shades with good fastness properties.
• Precursor for specialty inks, including those for inkjet and security printing applications.
• Employed in the synthesis of pigments for plastics and coatings where specific color characteristics are required.
• Research and development of novel colorants and functional dyes in academic and industrial laboratories.

Basic Information

Product Name	7-Amino-3-[[4-[(4-Chloro-2-Sodiosulfophenyl)Azo]-3-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6226-97-7
Molecular Formula	C23H16ClN5Na2O7S2
Molecular Weight	628.97 g/mol
Synonyms	7-Amino-4-hydroxy-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]naphthalene-2-sulfonic acid disodium salt; C.I. Direct Red 23 Intermediate; Direct Red 23 Diazo Component; 2-Naphthalenesulfonic acid, 7-amino-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt; Acid Red 114 Intermediate; Azo Dye Intermediate 6226-97-7; 4-Amino-5-hydroxy-6-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]naphthalene-2,7-disulfonic acid disodium salt (tautomeric form)
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Every lot is tested against established specifications using advanced analytical techniques, including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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). 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 brown to reddish-brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Freely soluble

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