For professionals in the chemical and textile industries, the efficient procurement of raw materials is fundamental to successful operations. 6-Amino-1-naphthalenesulfonic Acid, bearing the CAS number 81-05-0, is a vital chemical intermediate extensively used in the synthesis of a broad spectrum of dyes. Its unique properties and reactivity make it indispensable for creating vibrant and durable colors for various applications, from textiles to printing inks.

Product Profile: 6-Amino-1-naphthalenesulfonic Acid (CAS 81-05-0)

This compound is typically presented as a white crystalline powder. Its chemical formula is C10H9NO3S, and it has a molecular weight of 223.25. When sourcing this intermediate, key specifications to focus on include high purity, typically exceeding 98% as determined by HPLC. Manufacturers also emphasize low moisture content (usually less than 0.1%) and minimal insoluble matter (less than 0.1%), as these factors directly influence the efficiency and consistency of downstream synthesis processes. When you plan to buy, ensuring these quality metrics are met is paramount for optimal results.

Applications in the Dye Industry

The utility of 6-Amino-1-naphthalenesulfonic Acid spans several critical dye categories:

  • Acid Dyes: This intermediate is a key component in the production of acid dyes, which are primarily used for coloring protein-based fibers like wool and silk, as well as synthetic polyamides like nylon.
  • Reactive Dyes: For coloring cellulosic fibers such as cotton, reactive dyes offer excellent fastness properties. 6-Amino-1-naphthalenesulfonic Acid is often incorporated into the structure of these dyes to impart specific color characteristics and reactivity.
  • Indirect Dyes: It also finds application in the synthesis of indirect dyes, which require specific chemical treatments or mordants for fixation onto various substrates.

The combination of an amino group and a sulfonic acid group on the naphthalene backbone allows for extensive chemical modification, making it a versatile building block for color chemists.

Sourcing and Purchasing Strategies

For businesses looking to purchase 6-Amino-1-naphthalenesulfonic Acid, China represents a significant market with numerous manufacturing capabilities. Identifying a reliable supplier involves due diligence:

  • Verify Purity and Specifications: Always request a Certificate of Analysis (CoA) to confirm the product meets your required purity levels and other critical parameters.
  • Compare Pricing: Obtain quotes from multiple manufacturers, especially for bulk purchases, to ensure competitive pricing and favorable payment terms.
  • Assess Supplier Reliability: Look for manufacturers with established quality management systems, consistent production capacity, and good communication channels.
  • Request Samples: Before committing to a large order, it is advisable to obtain product samples for in-house testing to confirm performance in your specific applications.

By following these guidelines, procurement professionals can effectively source high-quality 6-Amino-1-naphthalenesulfonic Acid and ensure the consistent quality of their dye products.