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In the expansive world of specialty chemicals and dye intermediates, CAS No: 6163-58-2 occupies a significant niche. Known chemically as 1-Naphthalenesulfonic acid, 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, monosodium salt, this compound plays a vital role in the production of synthetic dyes, particularly azo dyes. It is a key intermediate in the synthesis of colorants used across multiple industries—from textiles to printing inks and beyond.

This blog aims to provide a comprehensive look at the landscape of manufacturers of CAS No: 6163-58-2, global production hubs, manufacturing processes, and critical considerations for sourcing this chemical safely and reliably.

Overview of CAS No: 6163-58-2

Chemical Identity:

• Chemical Name: 1-Naphthalenesulfonic acid, 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, monosodium salt
  
  

• CAS Registry Number: 6163-58-2
  
  

• Molecular Formula: C16H10NNaO10S3
  
  

• Molecular Weight: ~497.43 g/mol
  
  

• Physical Appearance: Typically appears as a reddish-brown or violet crystalline powder
  
  

• Solubility: Water-soluble, making it highly compatible with aqueous systems
  
  

This compound is classified as a dye intermediate and often serves as a precursor in the production of various reactive and direct dyes. It features prominently in the synthesis of azo dyes due to its ability to undergo diazotization and coupling reactions efficiently.

Key Applications

Manufacturers of CAS No: 6163-58-2 cater to industries that rely on high-performance dyes and pigments. Common applications include:

1. Textile Dyes: Especially useful in cotton dyeing processes, it helps create deep, vivid colors with good fastness properties.
   
   

2. Paper and Leather Dyeing: It enhances visual appeal and color uniformity in treated surfaces.
   
   

3. Pigment Manufacture: Utilized as a coupling component for azo pigments.
   
   

4. Chemical Research: Employed in R&D environments for studying complex aromatic sulfonic acid structures.
   
   

Because of its consistent reactivity and structural complexity, this compound is valued by chemists for both large-scale industrial processes and lab-scale synthesis.

Manufacturing Process

The synthesis of CAS No: 6163-58-2 is a multi-step process that requires precision, technical expertise, and rigorous safety standards. The production typically involves the following steps:

1. Nitration and Reduction: Precursor naphthalene compounds undergo nitration to introduce amino groups, followed by reduction reactions.
   
   

2. Sulfonation: Sulfonic acid groups are introduced into the aromatic ring at specific positions to enhance solubility and reactivity.
   
   

3. Hydroxylation: A hydroxy group is added to increase dye affinity and facilitate further reactions.
   
   

4. Neutralization: The compound is neutralized using sodium ions to form the monosodium salt, which is more stable and soluble.
   
   

5. Purification and Isolation: The final product is filtered, dried, and milled to meet purity and particle size specifications.
   
   

Manufacturers must adhere to strict quality control protocols throughout the process, including chromatographic purity tests and spectroscopic analysis.

Quality Standards and Regulatory Considerations

Manufacturers of CAS No: 6163-58-2 must comply with several regional and global standards to meet the expectations of end users. These include:

• ISO Certification: Ensures systematic quality management practices.
  
  

• REACH Registration (EU): Required for importing or manufacturing chemicals in Europe.
  
  

• GHS Labeling: Provides hazard identification and safe handling guidelines.
  
  

• RoHS & SVHC Compliance: Especially relevant for manufacturers supplying to electronics or regulated industries.
  
  

Environmental responsibility is increasingly important. Many producers are adopting eco-friendly manufacturing practices, including waste treatment, solvent recycling, and energy-efficient operations.

Sourcing and Procurement Best Practices

For buyers, whether in R&D, manufacturing, or procurement, selecting the right supplier is critical. Here are a few tips when sourcing CAS No: 6163-58-2:

• Check Purity and Technical Specifications: Always request a Certificate of Analysis (CoA) and SDS.
  
  

• Evaluate Consistency Across Batches: Ensure that the supplier can deliver consistent quality over time.
  
  

• Review Supply Chain Capabilities: Consider delivery timelines, packaging standards, and geographic shipping constraints.
  
  

• Assess Regulatory Compliance: Particularly important if you're operating in highly regulated regions such as the EU or North America.
  
  

Also, inquire about custom synthesis services if you require tailored specifications or packaging formats.

Conclusion

CAS No: 6163-58-2 continues to play a vital role in the global dye and pigment industry. With its unique chemical structure and reactivity, it is an indispensable intermediate for producing high-performance dyes. As global demand for colorants and specialty chemicals grows, so too does the importance of reliable, quality-focused manufacturers.

Whether you're sourcing it for industrial-scale applications or academic research, understanding the manufacturing landscape, regulatory expectations, and sourcing best practices will help you make informed decisions and maintain consistent supply.

URL: For more information, visit Vasista Pharma:  Cas No: 6163-58-2 Manufacturers