Description

6-Hydroxy-2-[3-[(2,4-Dihydroxyphenyl)Azo]Phenyl]-7-[(2,5-Dimethylphenyl)Azo]-1H-Naphth[1,2-D]Imidazole-8-Sulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart specific, stable color properties in advanced material formulations. It is primarily sought by manufacturers in the textile, specialty inks, and high-performance polymer industries for creating vivid and durable colorants.

Application

• Textile Dyeing: As a key intermediate for synthesizing high-fastness azo dyes for natural and synthetic fibers.
• Specialty Inks: Used in the formulation of industrial inks for printing, packaging, and security applications.
• Polymer & Plastic Coloring: Imparts color to engineering plastics and synthetic polymers requiring thermal and light stability.
• Research & Development: Serves as a critical reagent in chemical research for developing new chromophores and functional dyes.
• Liquid Crystal Displays (LCDs): Potential application in color filters and optical components due to its specific light-absorption properties.
• Analytical Chemistry: Can be utilized as a pH indicator or a complexometric agent in specific analytical methods.

Basic Information

Product Name	6-Hydroxy-2-[3-[(2,4-Dihydroxyphenyl)Azo]Phenyl]-7-[(2,5-Dimethylphenyl)Azo]-1H-Naphth[1,2-D]Imidazole-8-Sulfonic Acid Sodium Salt
CAS No.	6406-39-9
Molecular Formula	C33H23N5O6SNa
Molecular Weight	640.63 g/mol
Synonyms	Sodium 6-hydroxy-2-[3-[(2,4-dihydroxyphenyl)azo]phenyl]-7-[(2,5-dimethylphenyl)azo]-1H-naphth[1,2-d]imidazole-8-sulfonate; 6406-39-9; Azo Dye Intermediate 6406-39-9; C.I. 18965; Acid Dye Intermediate; 1H-Naphth[1,2-d]imidazole-8-sulfonic acid, 6-hydroxy-2-[3-[(2,4-dihydroxyphenyl)azo]phenyl]-7-[(2,5-dimethylphenyl)azo]-, sodium salt; Light Fast Orange RL Intermediate
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and meet specified impurity profiles. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and related substance data 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 a controlled 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 stability and performance.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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