Understanding the precise properties and industrial applications of chemical intermediates is fundamental for any R&D scientist or procurement manager. Metanilic Acid, identified by its CAS number 121-47-1 and chemical name 3-Aminobenzenesulfonic acid, is a prime example of such a compound, playing a pivotal role in the global chemical industry, especially in dye manufacturing. As a leading Metanilic Acid supplier in China, we aim to provide clear insights into why this intermediate is so highly valued.

Metanilic Acid is typically presented as a pinkish-white powder. Its molecular formula, C6H7NO3S, and a molecular weight of approximately 173.19 g/mol, point to its utility in organic synthesis. Key physical and chemical properties that are crucial for industrial applications include:

  • Purity: Commonly available at ≥98% assay, ensuring high performance in downstream synthesis.
  • Solubility: While slightly soluble in water and ethanol, its solubility characteristics are well-understood and managed in industrial processes.
  • Stability: It is stable under recommended storage conditions, typically in a cool, dry, and ventilated place.
  • Reactivity: The amino and sulfonic acid groups offer versatile reaction sites, making it ideal for diazotization and coupling reactions, essential for dye synthesis.

The primary industrial application of Metanilic Acid is as an intermediate in the production of a vast array of dyes. Its versatility allows it to be used in the synthesis of:

  • Acid Dyes: Used extensively for coloring protein and polyamide fibers, these dyes offer excellent brilliance and good fastness.
  • Reactive Dyes: Known for forming covalent bonds with fibers, leading to superior wash fastness, particularly on cotton.
  • Azo Dyes: This broad category of dyes, characterized by the azo group, relies on Metanilic Acid for creating many of its diverse colorants.
  • Sulfur Dyes: Cost-effective and used for deep shades, particularly on cotton, sulfur dyes also incorporate Metanilic Acid in their production routes.

For businesses looking to purchase Metanilic Acid, understanding the supply chain and pricing is essential. We serve as a direct manufacturer, allowing us to offer competitive Metanilic Acid price points, especially for bulk orders. We encourage potential clients to reach out for detailed quotations and to discuss their specific requirements for purity, packaging (e.g., 25kg bags), and delivery timelines. Ensuring a reliable supply of high-quality intermediates like Metanilic Acid is critical for maintaining production efficiency and product quality.

Furthermore, Metanilic Acid also finds utility in the preparation of other chemical compounds, such as m-aminophenol and vanillin, demonstrating its broad chemical significance. By understanding its properties and applications, industries can better leverage this vital intermediate.

For those seeking a dependable source of Metanilic Acid (CAS 121-47-1) from China, our company offers the quality, consistency, and competitive pricing you need. Contact us today to inquire about our product specifications and to secure your supply chain.