For chemists, formulators, and procurement specialists in the chemical industry, a deep understanding of a compound's chemical properties is fundamental to its successful application. Methylenebis(2-methylcyclohexylamine) (MACM), identified by CAS 6864-37-5, is a crucial alicyclic diamine widely used as an epoxy resin curing agent and a building block for advanced polymers. This article delves into the key chemical properties of MACM that dictate its performance and guides professionals on sourcing this valuable intermediate from reputable manufacturers and suppliers.

Key Chemical Properties of Methylenebis(2-methylcyclohexylamine) (MACM)

MACM is characterized by its unique molecular structure and physical attributes, which translate directly into its performance in various chemical reactions and formulations. Understanding these properties is essential for effective utilization:

  • Molecular Formula and Weight: C15H30N2, with a molecular weight of 238.41 g/mol. This composition contributes to its reactivity and the characteristics of the polymers it forms.
  • Appearance: Typically a clear, colorless to light yellow or light orange viscous liquid. Its fluid state at room temperature aids in handling and processing.
  • Melting Point: Approximately -7°C. This low melting point ensures it remains liquid under most standard storage and processing conditions.
  • Boiling Point: In the range of 93-100°C (lit.). This provides insight into its volatility and suitability for processes involving moderate heating.
  • Density: Around 0.94 g/mL at 25°C, which is close to that of water, influencing mixing and handling characteristics.
  • Solubility: It has a solubility of approximately 3.6 g/L in water at 20°C, and it is generally soluble in organic solvents. This solubility profile is important for formulating homogeneous mixtures.
  • pH: An aqueous solution shows a pH of 11 (at 3.6 g/L, H2O, 20°C), indicating its alkaline nature due to the amine groups.
  • Reactivity: The presence of two primary amine groups makes MACM a highly reactive compound, particularly with epoxides, isocyanates, and anhydrides, forming strong covalent bonds. This reactivity is central to its function as a curing agent.
  • Flash Point: Above 230°F (>230 °F), indicating relatively low flammability under normal conditions.

These properties make MACM an effective curing agent for epoxy resins, contributing to high cross-link density, excellent mechanical strength, good chemical resistance, and thermal stability in the cured product. Its ability to react with epoxides efficiently ensures rapid and thorough curing, which is beneficial for industrial applications where faster processing times are desired.

Procuring High-Quality MACM from Reliable Sources

When you plan to buy Methylenebis(2-methylcyclohexylamine), ensuring you source it from a reputable manufacturer or supplier is critical. The quality and consistency of MACM directly impact the performance of your final products. Here’s what to look for:

  • Guaranteed Purity: Ensure the supplier can consistently provide MACM with high purity, typically above 99%, with documented analysis.
  • Technical Data Sheets (TDS): Request TDS from your potential suppliers, which will detail these important chemical properties.
  • Competitive Pricing: Compare quotes from various manufacturers in China and other regions to secure the best price for your required volume.
  • Reliable Supply Chain: Partner with suppliers who have robust production capacity and efficient logistics to ensure on-time delivery.

Understanding the detailed chemical properties of MACM empowers R&D scientists and formulators to optimize their processes and develop high-performance materials. For those looking to purchase this valuable intermediate, collaborating with trusted suppliers and manufacturers will be key to achieving successful outcomes.