Description

Sodium 6-Amino-3-[[5-Anilinosulphonyl-2-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, synthetic azo dye intermediate. This compound is valued for its precise molecular structure, which is critical for producing consistent and vibrant colorants. It is primarily required by manufacturers in the dye and pigment industries for synthesizing specialized dyes used in textiles, inks, and other industrial applications.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance red and violet azo dyes.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Ink Manufacturing: Employed in the formulation of industrial and specialty printing inks, including inks for packaging and security applications.
• Pigment Production: Acts as a precursor in the manufacture of organic pigments for plastics, coatings, and paints.
• Research & Development: Utilized in chemical R&D labs for developing new colorants and studying azo coupling reactions.
• Specialty Chemical Synthesis: May be used in the synthesis of more complex chemical entities for niche applications in analytical chemistry or material science.

Basic Information

Product Name	Sodium 6-Amino-3-[[5-Anilinosulphonyl-2-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	85409-53-6
Molecular Formula	C23H17N4NaO7S2
Molecular Weight	556.52 g/mol
Synonyms	6-Amino-3-[[5-(phenylamino)sulfonyl-2-methylphenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid sodium salt; C.I. Acid Red 337; Sodium 6-amino-4-hydroxy-3-[[5-[(phenylamino)sulfonyl]-2-methylphenyl]azo]-2-naphthalenesulfonate; Azo dye intermediate 85409-53-6; 2-Naphthalenesulfonic acid, 6-amino-3-[[5-[(phenylamino)sulfonyl]-2-methylphenyl]azo]-4-hydroxy-, sodium salt; Acid Red 337, sodium salt; 5-Anilinosulphonyl-2-methylphenyl azo dye intermediate
EINECS	Contact for details

Quality Control

Our Sodium 6-Amino-3-[[5-Anilinosulphonyl-2-Methylphenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory needs.

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 opening to prevent degradation from 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	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in water)	Partially soluble, forms a colored solution

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