Description

7-Hydroxy-8-[[2-Methoxy-4-[(4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-1-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 vibrant and stable color properties in various industrial formulations. It is primarily sought after by manufacturers in the textile dyeing, ink production, and specialty pigment sectors who require consistent quality and reliable supply chains for their production processes.

Application

This azo dye intermediate serves as a critical precursor in the synthesis of complex colorants. Its primary and related applications include:

• Textile Dyeing: A key intermediate for producing dyes used on cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the formulation of printing inks for packaging, publications, and textiles.
• Pigment Production: Acts as a building block for creating organic pigments used in paints, plastics, and coatings.
• Leather Coloring: Employed in the dyeing process for leather goods.
• Paper Coloring: Used in the production of colored papers and paper products.
• Biological Staining: Potential use as a staining agent in histological and microbiological applications.
• Research & Development: Serves as a standard or reactant in chemical research and analytical method development.

Basic Information

Product Name	7-Hydroxy-8-[[2-Methoxy-4-[(4-Sodiosulfophenyl)Azo]Phenyl]Azo]Naphthalene-1-Sulfonic Acid Sodium Salt
CAS No.	6226-77-3
Molecular Formula	C23H16N4Na2O8S2
Molecular Weight	606.50 g/mol
Synonyms	Acid Red 359; C.I. 18215; 7-Hydroxy-8-[(2-methoxy-4-[(4-sulfophenyl)azo]phenyl)azo]-1-naphthalenesulfonic acid disodium salt; 1-Naphthalenesulfonic acid, 7-hydroxy-8-[[2-methoxy-4-[(4-sulfophenyl)azo]phenyl]azo]-, disodium salt; Disodium 7-hydroxy-8-{[2-methoxy-4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl}naphthalene-1-sulfonate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is analyzed to confirm identity, purity, and consistency. Certificates of Analysis (COA) detailing specific test results are available upon request. We adhere to a quality management system to guarantee the reliability required for industrial-scale manufacturing.

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 to prevent absorption of atmospheric moisture.

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	< 20 ppm
Water Solubility	Soluble

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