For professionals in the chemical and textile industries, a thorough understanding of chemical intermediates is vital for innovation and quality control. Gamma Acid, identified by CAS number 90-51-7, is a crucial naphthalene derivative with specific chemical properties that make it indispensable for the synthesis of high-performance azo dyes. NINGBO INNO PHARMCHEM CO.,LTD. provides essential technical insights into this compound.

Gamma Acid, also known as 6-amino-4-hydroxynaphthalene-2-sulfonic acid, possesses a molecular formula of C10H9NO4S and a molecular weight of approximately 239.25 g/mol. Its structure features both an amino group and a hydroxyl group on a naphthalene sulfonic acid backbone, enabling versatile reactivity in coupling reactions. Typically appearing as a light grey powder or granular solid, its solubility in water is limited, though its sodium salt exhibits significant water solubility and blue fluorescence, a characteristic noted in various chemical databases. These properties are foundational to its utility in dye synthesis.

The production of Gamma Acid is a sophisticated chemical process. Common manufacturing routes often begin with precursor molecules like 2-aminonaphthalene-6,8-disulfonic acid. Through processes involving fusion with strong alkalis at elevated temperatures, followed by purification steps such as acidification and filtration, the desired Gamma Acid is obtained. Some improved processes claim yields as high as 90%, highlighting the advancements in its synthesis. Understanding these production methods is important for R&D scientists seeking to optimize or replicate the synthesis, and for procurement managers ensuring supply chain reliability.

The unique chemical reactivity of Gamma Acid is exploited in coupling reactions with diazo compounds. Under acidic conditions, it couples at the 1-position, yielding dyes with excellent lightfastness, crucial for applications where color stability is paramount. In alkaline solutions, coupling can occur at the 7-position. This dual reactivity allows dye manufacturers to tailor the properties of the resulting dyes, making Gamma Acid a versatile intermediate. For those looking to buy Gamma Acid, knowing these properties helps in selecting the right grades for specific applications.

As a dedicated supplier, we ensure that our Gamma Acid meets high purity standards, essential for achieving the desired chemical reactions and final dye characteristics. Whether you are a researcher exploring new dye chemistries or a manufacturer needing a consistent supply of this intermediate, we are here to support your needs. Contact us to discuss your requirements and learn more about how our high-quality Gamma Acid can benefit your production processes.