For chemists and researchers working with specialized intermediates, a thorough understanding of a compound's properties is non-negotiable. This includes 4-Amino-3-butoxybenzoic Acid (CAS 23442-22-0), a valuable building block in organic synthesis. Knowing its characteristics aids in safe handling, optimal storage, and effective utilization in various chemical processes. When you intend to buy this product, these details become critical for your R&D or manufacturing team.

Physical Characteristics: Appearance and Form

4-Amino-3-butoxybenzoic Acid typically presents as a white powder. This solid form is common for many organic acids and amines with similar molecular weights and functional groups. As a solid, it is generally easier to handle, weigh, and store compared to liquids, although specific precautions related to dust inhalation are always recommended.

Chemical Properties and Reactivity

The chemical behavior of 4-Amino-3-butoxybenzoic Acid is dictated by its three key functional groups:

• Carboxylic Acid (-COOH): This acidic group readily participates in acid-base reactions, forming salts with bases. It can also undergo esterification with alcohols and amide formation with amines, making it a versatile site for derivatization.
• Amino Group (-NH2): The primary amine is nucleophilic and can be readily acylated, alkylated, or diazotized. Its presence is crucial for reactions involving aromatic amines, such as coupling reactions or the formation of Schiff bases.
• Butoxy Group (-O(CH2)3CH3): This ether linkage is relatively stable under many reaction conditions but contributes to the molecule's overall lipophilicity. It also influences the electron density distribution on the aromatic ring, affecting the reactivity of the adjacent amino and carboxylic acid groups.

Key Physicochemical Parameters

Understanding specific values provides further insight:

• Molecular Formula: C11H15NO3
• Molecular Weight: 209.24 g/mol
• Melting Point: Reported values are typically in the range of 123-125 °C, indicating a stable solid structure at room temperature.
• Boiling Point: Predicted boiling points are high, around 383.5 °C at atmospheric pressure, suggesting strong intermolecular forces and low volatility at ambient temperatures.
• Solubility: Its solubility characteristics can be pH-dependent due to the ionizable carboxylic acid and basic amino groups, making it moderately soluble in aqueous solutions, especially at higher or lower pHs, and soluble in common organic solvents.
• LogP: Approximately 2.79, indicating moderate lipophilicity, which is relevant for its behavior in biological systems or partitioning in biphasic reactions.

Handling and Storage Recommendations

As with most fine chemicals, 4-Amino-3-butoxybenzoic Acid should be stored in a cool, dry, well-ventilated area, away from incompatible materials like strong oxidizing agents. Keep containers tightly closed to prevent moisture absorption and contamination. When handling, wear appropriate personal protective equipment (PPE), including gloves, eye protection, and respiratory protection if dust is generated. For those looking to purchase this material, always refer to the Material Safety Data Sheet (MSDS) provided by the supplier for detailed safety and handling information.