4-Methoxybenzylamine (CAS 2393-23-9) is a chemical compound widely utilized across various industries, primarily as a versatile intermediate in organic synthesis and pharmaceutical manufacturing. Understanding its fundamental chemical properties, safe handling procedures, and appropriate storage conditions is essential for any professional working with this substance, whether in a laboratory setting or an industrial production environment.

Key Chemical Properties of 4-Methoxybenzylamine

As a primary amine, 4-Methoxybenzylamine exhibits characteristic reactivity. Its molecular formula is C8H11NO, with a molecular weight of 137.18 g/mol. The compound typically appears as a clear, colorless to slightly yellow liquid at room temperature. Key physicochemical properties include:

  • Melting Point: Approximately -10°C, indicating it remains a liquid under most standard laboratory conditions.
  • Boiling Point: Around 236-237°C (literature value), suggesting moderate volatility.
  • Density: Approximately 1.05 g/mL at 25°C, making it slightly denser than water.
  • Solubility: It is soluble in common organic solvents like chloroform and methanol, and also exhibits good solubility in water.
  • pKa: Approximately 9.30 (predicted), indicative of its basic nature due to the amine group.
  • Flash Point: Above 230°F (>110°C), classifying it as combustible but not highly flammable.

These properties make it adaptable for various reaction conditions and formulations. However, its reactivity, particularly the amine functionality, requires careful consideration during synthesis and handling.

Safe Handling and Storage Recommendations

Due to its corrosive nature, indicated by GHS hazard statements such as H314 (Causes severe skin burns and eye damage) and H318 (Causes serious eye damage), proper handling of 4-Methoxybenzylamine is paramount. Safety protocols should include:

  • Personal Protective Equipment (PPE): Always wear appropriate chemical-resistant gloves, eye protection (safety goggles and face shield), and protective clothing when handling this substance.
  • Ventilation: Work in a well-ventilated area or under a fume hood to minimize exposure to vapors.
  • Avoid Contact: Prevent contact with skin, eyes, and clothing. In case of contact, immediately flush affected areas with plenty of water and seek medical attention.
  • Incompatible Substances: Keep away from strong oxidizing agents and acids.

Regarding storage, it is recommended to:

  • Keep Container Closed: Store in tightly-closed containers to prevent moisture absorption and contamination.
  • Cool, Dry, and Dark Place: Maintain storage in a cool (e.g., 2-8°C), dry, and well-ventilated area, away from direct sunlight and heat sources.
  • Inert Atmosphere: For long-term storage and to maintain optimal purity, storing under an inert atmosphere like nitrogen is advisable.

By adhering to these guidelines, users can safely and effectively utilize 4-Methoxybenzylamine in their chemical processes. For those looking to purchase this compound, sourcing from manufacturers who provide comprehensive safety data sheets (SDS) and technical support is highly recommended.