Acid Yellow 23, also known as Tartrazine or CI 19140, is a synthetic azo dye renowned for its brilliant yellow color and wide-ranging industrial applications. This compound, with the chemical formula C16H9N4Na3O9S2, has been a staple in manufacturing for decades, valued for its consistency and versatility. NINGBO INNO PHARMCHEM CO.,LTD. is a significant player in the global supply of this essential dye.

The dye's physical properties, such as its appearance as a deep yellow powder and its high solubility in water (260 g/L at 30 °C), make it highly adaptable for various formulation processes. Its CAS number, 1934-21-0, is a critical identifier for procurement and quality assurance. The dye's molecular structure, characterized by a pyrazole ring and azo linkages, is responsible for its intense coloration.

In the textile sector, Acid Yellow 23 is a crucial acid dye, effectively coloring protein fibers like wool and silk, as well as polyamide and acetate fibers. Its dyeing mechanism involves ionic bonding between the dye's sulfonate groups and the positively charged amino groups in the fibers, resulting in excellent colorfastness. Understanding the optimal dyeing conditions and the benefits of using an acid dye supplier is key for textile manufacturers.

The food industry extensively utilizes Tartrazine, often designated as E102 in Europe and FD&C Yellow No. 5 in the United States. It imparts a characteristic bright yellow hue to a vast array of food products, including confectionery, baked goods, beverages, and dairy items. The dye's stability to light and heat, along with its good tinctorial strength, ensures that food products maintain their visual appeal. For food product developers, sourcing reliable food coloring is a non-negotiable aspect of quality control.

The pharmaceutical industry also relies on Acid Yellow 23 for coloring medicinal products. This application aids in brand recognition, dosage identification, and can even improve patient compliance by making medications more visually appealing. The rigorous standards for pharmaceutical ingredients necessitate that manufacturers obtain their coloring agents from reputable sources, like NINGBO INNO PHARMCHEM CO.,LTD.

Beyond these major sectors, Acid Yellow 23 serves as a colorant in cosmetics and is utilized in certain diagnostic reagents. Its predictable performance and availability make it a valuable chemical for various specialized applications. The ability to purchase this dye from an experienced manufacturer in China offers significant advantages in terms of cost and accessibility.

For businesses seeking to procure Acid Yellow 23, NINGBO INNO PHARMCHEM CO.,LTD. offers a dependable supply chain, ensuring timely delivery and consistent product quality. Their expertise as a chemical manufacturer and exporter means clients can be confident in the integrity of the products they receive, whether for large-scale industrial use or niche applications.