For B2B procurement professionals and chemists in the chemical industry, understanding the detailed properties and applications of specific compounds is crucial for making informed purchasing decisions. Acid Orange 10 (CAS 1936-15-8), also recognized as Orange G or C.I. 16230, is one such versatile chemical dye that merits a closer examination. This guide provides essential information for buyers looking to source this dye from reliable manufacturers.

Acid Orange 10 is an anionic azo dye, typically appearing as an orange powder. Its chemical structure, characterized by its disodium salt form of 7-hydroxy-8-(phenylazo)naphthalene-1,3-disulfonic acid, underpins its dyeing capabilities. With a molecular weight of 452.37 g/mol and the molecular formula C16H10N2Na2O7S2, it possesses properties that make it suitable for a range of industrial and scientific applications.

Key applications of Acid Orange 10 include textile dyeing, particularly for protein fibers like silk and wool, where it imparts a vibrant orange hue. It is also employed in the paper industry for coloring paper products and in the manufacturing of inks. Historically, it has been a staple in histology laboratories as a biological stain, used to visualize specific cellular components and connective tissues, often in conjunction with other stains.

When sourcing Acid Orange 10, buyers should pay close attention to product specifications. These typically include appearance (orange powder), purity (often stated as dye content or percentage), water solubility, and pH of solutions. For instance, its water solubility is moderate, and its pH in a 10g/l solution at 20°C is around 9. Understanding the technical properties, such as its UV-Vis absorption spectrum (λmax typically around 475 nm), helps in predicting its coloristic performance.

For businesses looking to buy Acid Orange 10, identifying trusted manufacturers and suppliers is paramount. Companies often seek competitive pricing, reliable supply chains, and consistent product quality. Many manufacturers, particularly in China, offer this dye with high purity and at attractive price points. It is advisable to request detailed product specifications, Certificates of Analysis (CoA), and safety data sheets (SDS) when you purchase. Engaging with suppliers to get a formal quote for your required quantities is a standard procurement step.

Furthermore, understanding the safety aspects of Acid Orange 10 is crucial for chemical handling. While generally considered to have moderate hazards (indicated by GHS07 signal word and H315-H319 hazard statements), appropriate personal protective equipment (PPE) should be used during handling. Its stability is good, but it can react with strong oxidizing agents. Proper storage in a dry, cool, well-ventilated place, sealed and shaded, is recommended to maintain its quality.

In summary, Acid Orange 10 is a fundamental dye with diverse applications. For chemical buyers, the key to successful procurement lies in understanding its technical properties, identifying reputable suppliers who can offer competitive pricing and consistent quality, and ensuring adherence to safety protocols. By doing so, businesses can reliably integrate Acid Orange 10 into their manufacturing processes or research endeavors.