Description

8-Amino-2-(4-Hydroxy-3-Methylphenyl)Azo-1-Naphthol-3,6-Disulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate characterized by its sulfonic acid groups and disodium salt form. This compound matters for its role as a critical precursor in the synthesis of specialized dyes and pigments, offering excellent chromophore properties and enhanced solubility for industrial processes. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing colorants with specific shades and improved fastness properties.

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 nylon, silk, wool, and paper.
• Textile Industry: Used in the production of dyes for textile fibers, providing vibrant colors with good wash and light fastness.
• Ink Manufacturing: Employed in the formulation of inks for various printing applications, including inks for packaging and security printing.
• Laboratory Reagent: Functions as a chemical reagent in research and development for studying azo coupling reactions and dye chemistry.
• Specialty Pigments: Can be utilized in the creation of lake pigments and other specialty colorants for industrial coatings and plastics.
• Biological Staining: Potential use as a staining agent in histological and cytological applications due to its chromophoric structure.

Basic Information

Product Name	8-Amino-2-(4-Hydroxy-3-Methylphenyl)Azo-1-Naphthol-3,6-Disulfonic Acid Disodium Salt
CAS No.	143174-04-3
Molecular Formula	C₁₇H₁₄N₄O₈S₂ • 2Na
Molecular Weight	528.42 g/mol
Synonyms	Acid Red 337 (C.I. 17200); 8-Amino-2-[(4-hydroxy-3-methylphenyl)azo]-1-naphthol-3,6-disulfonic acid, disodium salt; 1-Naphthol-3,6-disulfonic acid, 8-amino-2-[(4-hydroxy-3-methylphenyl)azo]-, disodium salt; C.I. 17200; Disodium 8-amino-2-[(4-hydroxy-3-methylphenyl)azo]-1-naphthol-3,6-disulphonate; Azo dye intermediate 143174-04-3; 2-[(4-Hydroxy-3-methylphenyl)azo]-8-amino-1-naphthol-3,6-disulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our 8-Amino-2-(4-Hydroxy-3-Methylphenyl)Azo-1-Naphthol-3,6-Disulfonic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics 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 ambient temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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