Description

7-[(4-Aminobenzoyl)amino]-4-hydroxy-3-[[4-[[8-hydroxy-7-[(4-methylphenyl)azo]-6-sodiosulfo-2-naphthalenyl]aminocarbonyl]phenyl]azo]naphthalene-2-sulfonic acid sodium salt is a high-purity, complex azo dye intermediate and specialty chemical. This compound is valued for its precise molecular structure, which is critical for synthesizing high-performance dyes and pigments with specific coloristic properties. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to develop products with enhanced color fastness, brightness, and chemical stability.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-value, complex azo dyes for textiles, leather, and paper.
• Specialty Ink Formulations: Used in the production of advanced inks for packaging, security printing, and digital applications requiring specific spectral properties.
• Functional Colorants for Polymers: Incorporated into the manufacturing of colored plastics and engineering polymers where thermal stability and compatibility are essential.
• Research & Development: Employed in chemical R&D for developing novel chromophores, sensors, and functional materials.
• Analytical Chemistry Reagent: May be used as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Item	Detail
Product Name	7-[(4-Aminobenzoyl)amino]-4-hydroxy-3-[[4-[[8-hydroxy-7-[(4-methylphenyl)azo]-6-sodiosulfo-2-naphthalenyl]aminocarbonyl]phenyl]azo]naphthalene-2-sulfonic acid sodium salt
CAS No.	5873-32-5
Molecular Formula	C41H28N7Na2O10S2
Molecular Weight	904.81 g/mol
Synonyms	Acid Red 337; C.I. 17215; Sodium 7-[(4-aminobenzoyl)amino]-4-hydroxy-3-{[4-({8-hydroxy-7-[(4-methylphenyl)diazenyl]-6-sulfo-2-naphthyl}carbamoyl)phenyl]diazenyl}naphthalene-2-sulfonate; 7-[(4-Aminobenzoyl)amino]-4-hydroxy-3-{[4-({8-hydroxy-7-[(4-methylphenyl)diazenyl]-6-sulfo-2-naphthyl}carbamoyl)phenyl]diazenyl}naphthalene-2-sulfonic acid disodium salt; Azo dye intermediate 5873-32-5; C.I. Acid Red 337
EINECS	Contact for details

Quality Control

Our production of 7-[(4-Aminobenzoyl)amino]-4-hydroxy-3-[[4-[[8-hydroxy-7-[(4-methylphenyl)azo]-6-sodiosulfo-2-naphthalenyl]aminocarbonyl]phenyl]azo]naphthalene-2-sulfonic acid sodium salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent chemical structure, and batch-to-batch reproducibility, meeting the exacting standards of industrial dye synthesis. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided to guarantee supply reliability and technical compliance for your manufacturing processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Due to its complex organic structure and potential light sensitivity, prolonged exposure to high temperatures or direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 5.0 %
Residue on Ignition (Sulfated Ash)	≤ 20.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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