For professionals in the chemical and textile industries, understanding the nuances of dye intermediates is paramount to achieving vibrant and lasting colors. Among these essential components, 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid (CAS 6535-70-2) stands out as a critical building block for a wide array of azo dyes and pigments. As a leading manufacturer and supplier based in China, we recognize the importance of this compound and aim to provide insights into its application and the benefits of sourcing it from a reliable partner.

The Chemical Backbone of Vibrant Colors

2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid, with its molecular formula C10H9NO7S2 and a molecular weight of 319.31, is more than just a chemical compound; it's a key enabler of color. Its structure, featuring a naphthalene core with strategically placed amino, hydroxyl, and two sulfonic acid groups, grants it unique properties. The sulfonic acid groups are crucial for imparting water solubility, a vital characteristic for many dye applications, particularly in aqueous-based systems common in textile dyeing and paper manufacturing. This solubility ensures that the dye can be effectively dispersed and bound to the substrate, leading to uniform and intense coloration.

The presence of both an amino (-NH2) and a hydroxyl (-OH) group makes this intermediate highly reactive. These functional groups are essential for the diazotization and coupling reactions that form the basis of azo dye synthesis. By reacting with diazonium salts derived from other aromatic amines, 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid participates in the formation of the azo linkage (-N=N-), which is the chromophore responsible for the color of azo dyes.

Why Choose a Reliable Supplier for Dye Intermediates?

When it comes to sourcing chemical intermediates for dye production, consistency and purity are non-negotiable. A high-purity intermediate like 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid (often specified with HPLC purity ≥ 99%) ensures predictable reaction outcomes, minimizes by-product formation, and ultimately leads to higher quality end products. This is particularly important for applications in textiles where color fastness, vibrancy, and consistency are key performance indicators. For R&D scientists and procurement managers, finding a supplier who can guarantee these attributes is essential for efficient production and brand reputation.

As a dedicated manufacturer in China, we understand these demands. Our commitment to rigorous quality control throughout the production process ensures that each batch of 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid meets stringent specifications. This allows our clients to confidently buy and utilize this intermediate in their formulations, knowing they are working with a reliable and high-performance raw material. We offer competitive pricing and flexible supply options, catering to both research quantities and bulk industrial needs.

Applications Beyond Textiles

While its role in textile dyeing is prominent, the utility of 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid extends to other areas, including the production of pigments for coatings, inks, and plastics. Its ability to form stable, intensely colored azo compounds makes it a valuable component in pigment synthesis where lightfastness and chemical resistance are critical. For those looking to purchase this crucial intermediate, understanding its versatility is key to unlocking new product development opportunities.

In conclusion, for any manufacturer or researcher involved in dye and pigment synthesis, 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid is an indispensable compound. Partnering with a reputable supplier ensures access to a high-quality, reliable, and cost-effective source. If you are seeking to optimize your dye production and explore new color possibilities, consider us as your trusted chemical supplier. Reach out to us to discuss your specific requirements and obtain a quote for this essential dye intermediate.