Description

Sodium 6-Amino-5-[[4-Chloro-3-[[(2,4-Dimethylphenyl)Amino]Sulphonyl]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for producing vibrant and stable colorants, particularly in the textile and specialty ink industries. This compound is essential for manufacturers and R&D facilities focused on developing advanced dyes, pigments, and colorimetric reagents.

Application

• Primary Intermediate for Dye Synthesis: A crucial building block for manufacturing a range of azo dyes, especially for textiles like cotton, wool, and nylon.
• Textile Dyeing and Printing: Used in the formulation of dyes for fabric coloration, offering good wash and light fastness properties.
• Specialty Ink Production: Serves as a colorant component in inks for packaging, security printing, and other industrial applications.
• Pigment Manufacturing: Acts as a precursor in the synthesis of lake pigments used in paints, plastics, and coatings.
• Research & Development: Employed in chemical research for developing new chromophores and studying azo coupling reactions.
• Analytical Reagents: Potential use in the formulation of colorimetric indicators and reagents for laboratory analysis.

Basic Information

Product Name	Sodium 6-Amino-5-[[4-Chloro-3-[[(2,4-Dimethylphenyl)Amino]Sulphonyl]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	71873-39-7
Molecular Formula	C24H19ClN5NaO6S2
Molecular Weight	604.02 g/mol
Synonyms	6-Amino-5-((4-chloro-3-((2,4-dimethylphenyl)aminosulfonyl)phenyl)azo)-4-hydroxy-2-naphthalenesulfonic acid sodium salt; C.I. Acid Red 337; Sodium 6-amino-4-hydroxy-5-((4-chloro-3-((2,4-dimethylphenyl)sulfamoyl)phenyl)azo)naphthalene-2-sulfonate; Acid Red 337; Azo dye intermediate 71873-39-7; 2-Naphthalenesulfonic acid, 6-amino-5-((4-chloro-3-((2,4-dimethylphenyl)aminosulfonyl)phenyl)azo)-4-hydroxy-, monosodium salt
EINECS	Contact for details

Quality Control

Our Sodium 6-Amino-5-[[4-Chloro-3-[[(2,4-Dimethylphenyl)Amino]Sulphonyl]Phenyl]Azo]-4-Hydroxynaphthalene-2-Sulphonate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are provided and 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 room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from incompatible materials such as strong oxidizing agents.

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 (1% in Water)	Complete, clear solution

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