4-Aminophthalic acid (CAS 5434-21-9) is a versatile organic compound with significant utility across various chemical industries, notably in pharmaceuticals and dyes. Its bifunctional nature, featuring both an amino group and two carboxylic acid groups, makes it a valuable building block in organic synthesis. For researchers and industrial chemists, understanding its properties, common synthesis routes, and how to procure it efficiently is crucial. This article provides an overview of 4-aminophthalic acid, from its chemical characteristics to its role as a commercially sourced intermediate.

Chemically, 4-aminophthalic acid is typically a beige powder with a high melting point, around 344°C (with decomposition). Its molecular formula is C8H7NO4, and its molecular weight is 181.15 g/mol. The presence of the amino group allows for reactions such as acylation and diazotization, while the carboxylic acid groups can undergo esterification and amide formation. These reactivity profiles make it an ideal starting material for more complex molecules. When considering purchasing this compound, it is essential to verify the product's specifications, including purity (often ≥98%) and physical form, from your supplier.

The synthesis of 4-aminophthalic acid commonly involves the reduction of 4-nitrophthalic acid. A typical laboratory preparation involves dissolving 4-nitrophthalic acid in a suitable solvent like ethanol, adding a catalyst such as palladium on carbon, and then exposing the mixture to hydrogen gas. After the reduction is complete, the catalyst is filtered off, and the product is isolated. Industrial-scale synthesis will follow similar principles but with optimized conditions for yield, efficiency, and cost-effectiveness. As a manufacturer, we focus on reproducible synthesis methods to ensure consistent quality for our clients seeking to buy 4-aminophthalic acid.

Procuring 4-aminophthalic acid requires careful consideration of suppliers. When you need to buy this chemical, looking for manufacturers with a proven track record in producing high-purity intermediates is recommended. Factors such as batch-to-batch consistency, competitive pricing, and responsive customer service are key indicators of a reliable supplier. We are a dedicated manufacturer and supplier based in China, offering high-quality 4-aminophthalic acid to meet the diverse needs of the global market. Our goal is to simplify your procurement process by providing a dependable source for your chemical synthesis requirements.

In summary, 4-Aminophthalic acid is a fundamental intermediate with a wide range of applications. Understanding its chemical properties and synthesis pathways empowers chemists to utilize it effectively. For those looking to purchase this compound, partnering with an experienced manufacturer and supplier ensures the quality and reliability necessary for successful research and industrial production. Contact us for detailed product information, competitive pricing, and to secure your supply of 4-aminophthalic acid.