Description

Disodium 5-((4-Acetylamino-2-Sulphophenyl)Azo)-6-Amino-4-Hydroxynaphthalene-2-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its primary value lies in its role as a key precursor for synthesizing reactive and direct dyes, particularly those used in textile applications requiring bright, wash-fast shades. This compound is essential for manufacturers and R&D laboratories in the dye and pigment, textile chemical, and specialty chemical industries seeking reliable, consistent-quality intermediates for their production processes.

Application

• Primary Intermediate for Reactive Dyes: Serves as a crucial building block in the synthesis of high-performance reactive dyes for cotton, viscose, and other cellulosic fibers.
• Direct Dye Synthesis: Used in the manufacture of direct dyes, providing excellent substantivity to cellulose materials.
• Textile Printing Inks: A key component in formulating specialized printing inks for the textile industry.
• Research & Development: Employed in chemical R&D for developing novel dye structures and studying azo coupling reactions.
• Specialty Pigments: Can be utilized in the production of certain lakes and pigments for niche applications.
• Analytical Chemistry: May serve as a standard or reagent in specific colorimetric analytical methods.

Basic Information

Product Name	Disodium 5-((4-Acetylamino-2-Sulphophenyl)Azo)-6-Amino-4-Hydroxynaphthalene-2-Disulphonate
CAS No.	6360-07-2
Molecular Formula	C18H13N4Na2O10S3
Molecular Weight	610.48 g/mol
Synonyms	5-[(4-Acetylamino-2-sulfophenyl)azo]-6-amino-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; C.I. 25235; Disodium 6-amino-4-hydroxy-5-[(2-(4-acetamidophenyl)sulfonyl)phenyl]azo]-2,7-naphthalenedisulfonate; Reactive Dye Intermediate; Azo Dye Intermediate DA-1 (Trade); 2,7-Naphthalenedisulfonic acid, 6-amino-4-hydroxy-5-((4-(acetylamino)-2-sulfophenyl)azo)-, disodium salt; 6360-07-2 (CAS Index Name base)
EINECS	228-875-7

Quality Control

Our Disodium 5-((4-Acetylamino-2-Sulphophenyl)Azo)-6-Amino-4-Hydroxynaphthalene-2-Disulphonate is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability, meeting the exacting standards required for industrial dye synthesis. Comprehensive Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are provided with each shipment.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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