Description

6-Hydroxy-5-[[4-[[4-[(2-Methylphenyl)Amino]-3-Sulfophenyl]Azo]-1-Naphtyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, synthetic azo dye intermediate of significant industrial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for producing vibrant and stable dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance azo dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and coatings, offering good color strength and dispersion.
• Specialty Colorants: Employed in the formulation of specialized colorants for non-textile applications, including markers and toners.
• Research & Development: Utilized in chemical R&D labs for developing new chromophores and studying azo coupling reactions.
• Analytical Chemistry: Can be used as a standard or reagent in certain colorimetric analytical methods.

Basic Information

Item	Detail
Product Name	6-Hydroxy-5-[[4-[[4-[(2-Methylphenyl)Amino]-3-Sulfophenyl]Azo]-1-Naphtyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	6262-08-4
Molecular Formula	C33H23N5O7S2•2Na
Molecular Weight	711.68 g/mol
Synonyms	Acid Red 337; C.I. 17215; Disodium 6-hydroxy-5-({4-[(4-{[(2-methylphenyl)amino]carbonyl}phenyl)diazenyl]-1-naphthyl}diazenyl)naphthalene-2-sulfonate; 6-Hydroxy-5-((4-((4-((2-methylphenyl)carbamoyl)phenyl)diazenyl)-1-naphthyl)diazenyl)naphthalene-2-sulfonic acid disodium salt; Azo dye intermediate 6262-08-4; 2-Naphthalenesulfonic acid, 6-hydroxy-5-[[4-[[4-[(2-methylphenyl)amino]-3-sulfophenyl]azo]-1-naphthalenyl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our production of 6-Hydroxy-5-[[4-[[4-[(2-Methylphenyl)Amino]-3-Sulfophenyl]Azo]-1-Naphtyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed against rigorous in-house specifications, which typically include identity confirmation, assay (purity), and control of key impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment 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 sealed to prevent absorption of atmospheric moisture, which can affect product quality.

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

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