Acid Blue 9, also recognized as Erioglaucine Disodium Salt (CAS 3844-45-9), is a synthetic organic compound that has become indispensable across various industries due to its distinctive blue color and chemical properties. As a B2B professional involved in product formulation or procurement, a thorough understanding of its chemical characteristics and safety profile is essential for effective and compliant utilization.

Chemically, Acid Blue 9 is classified as a triarylmethane dye. Its molecular formula is C37H34N2Na2O9S3, with a molecular weight of approximately 792.85 g/mol. The appearance of the pure compound is typically described as a red-purple to blue-purple powder. A key characteristic is its high water solubility, which makes it exceptionally easy to incorporate into aqueous-based formulations without the need for specialized solvents. The dye exhibits maximum absorption around 628 nanometers, contributing to its intense blue color. Its stability under various conditions, including moderate pH ranges and temperature, further enhances its suitability for diverse applications.

From a safety perspective, Acid Blue 9 has undergone extensive evaluation. Regulatory bodies in many countries, including the U.S. FDA and European authorities, have approved its use in specific applications, particularly as a food additive (E133), pharmaceutical colorant, and cosmetic ingredient. When used within approved limits, it is generally considered safe for consumption and topical application. However, like all chemical substances, proper handling procedures are advised. Users should consult the Safety Data Sheet (SDS) provided by their supplier for detailed information on personal protective equipment (PPE), potential hazards, and appropriate storage conditions. Some studies have indicated potential effects on purinergic receptors in biomedical research, highlighting the importance of adhering to prescribed usage levels and regulatory guidelines.

The versatility of Acid Blue 9 stems from its combination of vibrant color, excellent solubility, and a well-established safety profile. Whether you are a food manufacturer looking to enhance product appeal, a pharmaceutical company aiming for clear product identification, or a cosmetic formulator seeking brilliant shades, understanding these chemical properties and safety considerations is paramount. By partnering with a reputable Acid Blue 9 supplier, you can ensure you receive a product that meets the necessary quality standards and regulatory requirements for your specific industry. Always consult official documentation and regulatory advisories to ensure the compliant use of this valuable chemical ingredient.