Description

Sodium 6-Amino-5-[(4-Anilinosulphonylphenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing specific, high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid and stable colorants.

Application

This specialized azo intermediate is primarily utilized in the synthesis of complex dyes and pigments. Its specific structure allows for the creation of colors with desirable properties for demanding applications.

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the manufacture of acid dyes, direct dyes, and reactive dyes used in textile coloring.
• Pigment Manufacturing: Used in the synthesis of organic pigments for inks, plastics, and coatings, where color fastness and chemical stability are required.
• Specialty Chemical Synthesis: Acts as a key reactant in producing more complex, sulfonated azo compounds for niche applications.
• Research & Development: Employed in chemical R&D labs for developing new dye molecules and studying azo coupling reactions.

Basic Information

Item	Details
Product Name	Sodium 6-Amino-5-[(4-Anilinosulphonylphenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	69029-99-8
Molecular Formula	C22H16N4Na2O7S2
Molecular Weight	582.50 g/mol
Synonyms	6-Amino-5-[(4-anilinosulfonyl)phenyl]azo-4-hydroxy-2-naphthalenesulfonic acid disodium salt; C.I. Acid Yellow 219; Acid Yellow 219; Azo dye intermediate 69029-99-8; 5-[(4-Anilinosulfonyl)phenyl]azo-6-amino-4-hydroxy-2-naphthalenesulfonic acid disodium salt; Sodium 6-amino-4-hydroxy-5-[(4-(phenylamino)sulfonyl)phenyl]azo-2-naphthalenesulfonate
EINECS	Contact for details

Quality Control

Our Sodium 6-Amino-5-[(4-Anilinosulphonylphenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance as a dye intermediate. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request 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 room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature (store away from light), prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear solution

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