At NINGBO INNO PHARMCHEM CO.,LTD., we understand that a thorough knowledge of chemical properties is paramount for effective application. Acid Yellow 99 (CAS 10343-58-5) is an anionic dye with a specific molecular formula and structure that dictates its behavior in various chemical processes. The compound is typically described as a yellow powder, a visual cue to its chemical nature.

The molecular formula for Acid Yellow 99 is often cited as C16H15CrN4NaO8S, with a molecular weight of approximately 496.35 g/mol. This complex structure includes a chromophore responsible for its yellow color and functional groups that confer its anionic character. Understanding this structure is key to predicting its solubility, reactivity, and suitability for specific applications such as adsorption studies or its role in photoresist chemicals.

While the exact synthesis pathways are proprietary to manufacturers, the general class of acid dyes involves azo coupling reactions. These reactions typically involve the diazotization of an aromatic amine followed by coupling with another aromatic compound containing an electron-donating group. The presence of sulfonate groups (-SO3-) renders the dye acidic and water-soluble, classifying it as an acid dye. The inclusion of chromium in its structure, as indicated by the 'Cr' in some chemical notations, suggests it might be a chrome dye, known for its excellent fastness properties on protein fibers.

For researchers and industrial users, acquiring Acid Yellow 99 with high purity is crucial. Impurities can affect its performance in sensitive applications like electronic chemicals or lead to inaccurate results in quantitative adsorption studies. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to providing accurately specified and reliably sourced Acid Yellow 99, supporting the precise needs of our clients. When you choose to buy Acid Yellow 99 from us, you are investing in quality and consistency.