Description

Disodium 3-[[4-(Acetylamino)Phenyl]Azo]-4-Hydroxy-5-[(Phenylsulphonyl)Amino]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing specialized dyes and pigments, offering excellent color strength and stability. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of acid dyes and direct dyes for textiles like wool, silk, and nylon.
• Specialty Ink Formulation: Used in the production of high-quality inks for packaging, security printing, and digital applications.
• Industrial Pigment Manufacturing: Acts as a precursor for creating pigments used in plastics, paints, and coatings.
• Research & Development: Employed in chemical R&D for developing novel chromophores and functional dyes with specific optical properties.
• Biological Staining Agent: Potential use in the formulation of histological stains for laboratory and diagnostic purposes.

Basic Information

Product Name	Disodium 3-[[4-(Acetylamino)Phenyl]Azo]-4-Hydroxy-5-[(Phenylsulphonyl)Amino]Naphthalene-2,7-Disulphonate
CAS No.	13390-46-0
Molecular Formula	C24H18N4Na2O10S3
Molecular Weight	672.58 g/mol
Synonyms	Acid Red 337; C.I. 17200; Disodium 5-(phenylsulfonylamino)-3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonate; 3-[[4-(Acetylamino)phenyl]azo]-4-hydroxy-5-[(phenylsulfonyl)amino]-2,7-naphthalenedisulfonic acid disodium salt; Naphthalenedisulfonic acid, 3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-5-[(phenylsulfonyl)amino]-, disodium salt; Azo dye intermediate 13390-46-0; 5-[(Benzenesulfonyl)amino]-3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 3-[[4-(Acetylamino)Phenyl]Azo]-4-Hydroxy-5-[(Phenylsulphonyl)Amino]Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color value, and performance. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided to guarantee compliance with your technical requirements.

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 oxidizing agents. The product is light-sensitive and should be stored away from light to prevent degradation.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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