Description

6-Hydroxy-5-[[2-Methyl-4-[(2-Methyl-4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its primary value lies in its role as a critical precursor for synthesizing a range of vibrant and stable dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty colorant industries seeking to produce high-performance coloring agents.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes, direct dyes, and reactive dyes used for coloring textiles like wool, silk, nylon, and paper.
• Pigment Manufacturing: Utilized in the production of high-performance organic pigments for inks, plastics, and coatings, offering excellent color strength and stability.
• Specialty Colorants: Applied in the formulation of specialized dyes for leather, food packaging inks, and other industrial applications requiring specific hue and fastness properties.
• Research & Development: Used in chemical research laboratories for developing novel dye structures and studying azo coupling reactions.
• Biological Staining: Potential use as a precursor for certain biological stains and histological dyes in life sciences.

Basic Information

Item	Details
Product Name	6-Hydroxy-5-[[2-Methyl-4-[(2-Methyl-4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt
CAS No.	6262-02-8
Molecular Formula	C24H17N4Na2O7S2
Molecular Weight	598.52 g/mol
Synonyms	Acid Red 337; C.I. 17210; 6-Hydroxy-5-((2-methyl-4-((2-methyl-4-sulfonatophenyl)diazenyl)phenyl)diazenyl)naphthalene-2-sulfonate; Sodium 6-hydroxy-5-[(E)-[4-[(E)-(2-methyl-4-sulfonatophenyl)diazenyl]-2-methylphenyl]diazenyl]naphthalene-2-sulfonate; Azo Dye Intermediate 6262-02-8; 2-Naphthalenesulfonic acid, 6-hydroxy-5-((2-methyl-4-((2-methyl-4-sulfophenyl)azo)phenyl)azo)-, sodium salt (1:2)
EINECS	Contact for details

Quality Control

Our production of 6-Hydroxy-5-[[2-Methyl-4-[(2-Methyl-4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and compliance with customer specifications. Comprehensive Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance processes.

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 each use to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Dark red to 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
Water Solubility	Freely soluble

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