For any chemical synthesis, understanding the precise properties and purity of the starting materials is fundamental to achieving desired outcomes. 4-Aminoacetanilide (CAS 122-80-5) is a chemical intermediate widely used in the dye and pharmaceutical industries. Its effectiveness in these applications hinges on its chemical characteristics and impurity profile. This article focuses on providing B2B buyers, R&D scientists, and formulation chemists with a comprehensive understanding of these aspects to facilitate informed sourcing decisions.

Chemical Structure and Reactivity of 4-Aminoacetanilide

4-Aminoacetanilide, also known as N-(4-Aminophenyl)acetamide, possesses the molecular formula C8H10N2O and a molecular weight of approximately 150.18 g/mol. Its structure features a benzene ring substituted with an amino group (-NH2) at one position and an acetylamino group (-NHCOCH3) at the para position. This dual functionality is key to its versatility:

• The Amino Group: The primary amine is nucleophilic and readily undergoes diazotization reactions, forming a diazonium salt. This diazonium salt is then crucial for coupling reactions in the synthesis of azo dyes. It also serves as a site for various other chemical modifications in organic synthesis, including acylation or alkylation.
• The Acetylamino Group: This group moderates the reactivity of the amino group and can also undergo hydrolysis under certain conditions, revealing a second primary amine if required for a different synthesis pathway.

These properties make it a valuable precursor for creating complex molecules, ensuring its demand among chemical manufacturers and researchers seeking '4-aminoacetanilide for synthesis.'

Purity Standards and Impurity Profiles

The purity of 4-Aminoacetanilide is a critical determinant of its performance, especially in applications demanding high precision, such as pharmaceuticals and high-performance dyes. Typical industrial grades often specify a purity of 98% or higher, commonly determined by Gas Chromatography (GC) or High-Performance Liquid Chromatography (HPLC). Essential impurities to monitor include:

• Unreacted starting materials: Residues from the synthesis process, such as 4-nitroacetanilide or acetanilide.
• Isomers: Although less common, other isomers of aminoacetanilide could be present.
• Over-acetylated or under-acetylated products: Such as N,N-diacetyl-1,4-phenylene diamine.
• Degradation products: Compounds formed due to improper storage or handling, like oxidized species that can lead to discoloration.

For pharmaceutical intermediates, stricter controls on specific impurities, heavy metals, and residual solvents are typically mandated. When searching for 'cas 122-80-5 pharmaceutical intermediate manufacturer,' buyers should verify the supplier’s quality control measures and documentation thoroughly.

Physical Properties and Handling Considerations

Industrially, 4-Aminoacetanilide is typically supplied as a pink to brown powder or crystals. Its melting point is generally in the range of 159-165 °C, indicating its solid state at room temperature. It is slightly soluble in water but more soluble in organic solvents like ethanol and ether. Proper storage is crucial to maintain its quality; it should be stored in tightly closed containers in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible materials. Exposure to air and light can lead to gradual darkening, which might indicate some degree of oxidation or degradation, a factor important for R&D scientists evaluating 'p-Aminoacetanilide' for sensitive reactions.

Sourcing High-Quality 4-Aminoacetanilide

To ensure you obtain 4-Aminoacetanilide that meets your synthesis requirements, always partner with reputable manufacturers and suppliers. Companies that provide detailed product specifications, offer Certificates of Analysis, and have robust quality management systems are preferred. Whether you are looking for '4-aminoacetanilide price for dye intermediate' or 'cas 122-80-5 pharmaceutical intermediate manufacturer,' prioritizing purity and a clear impurity profile will lead to more successful and reproducible synthesis results.

By understanding the chemical properties and purity requirements of 4-Aminoacetanilide, B2B buyers can make more informed decisions, leading to more efficient and successful chemical syntheses.