| Name | 1,3-Propanediamine, N,N-bis[3-(dimethylamino)propyl]-N’,N’-dimethyl- |
| Formula | C13H32N4 |
| CAS No. | 33329-35-0 |
| Molecular weight | 244.42 g/mol |
| Appearance | Colorless to yellowish liquid |
| Purity | ≥ 98% |
| Flash Point | 138 °C |
| Boiling Point | > 175 °C |
| Density (@ 22.5 °C) | 0.848 g/cm³ |
| Dynamic Viscosity (@ 40 °C) | 3.3 mPa.s |
| pH (4% in water) | 11.3 |
| Solubility in Water (@ 25 °C) | 54.9 g/l |
| Freezing Point | < -25 °C |
Molecular Architecture & Low-Odor Design
The fundamental structure of MXC-9 is engineered to overcome the emission and volatility issues associated with conventional catalysts:
Symmetrical Tris-Amine Framework: Featuring three active dimethylaminopropyl groups attached to a central nitrogen atom, this specific molecular architecture delivers robust catalytic efficiency even at lower usage levels.
Inherent Low-Volatility: Its substantial molecular weight ($244.42\ g/mol$) and bulky nature significantly resist vaporization. This provides an excellent low-odor solution that improves your factory environment and helps end-products meet strict emission standards.
Balanced Catalytic Control
For production engineers, MXC-9 is highly valued for its predictable and forgiving reaction profile across various foam systems:
Perfect Gelling-Blowing Equilibrium: It provides an exceptional balance between the urethane (gelling) and urea (blowing) reactions. This synchronized process prevents structural defects like foam shrinkage or internal voids.
Smooth Reaction Initiation: When utilized as a co-catalyst, it effectively smooths out the initial reaction phase, preventing sudden exotherms and ensuring a steady, uniform foam rise.
Superior Dimensional Stability: This controlled curing mechanism results in a finer, more consistent cell structure, which is critical for maximizing thermal insulation in rigid panels and durability in elastomeric foams.
Process Efficiency & Operational Safety
We prioritize providing technical parameters that directly improve your manufacturing efficiency and workplace safety:
Enhanced Thermal Security: Boasting an exceptionally high flash point of 138°C and a boiling point exceeding 175°C, it significantly minimizes fire risks during intense, heat-generating polyurethane reactions.
Optimal Liquid Dynamics: Its ultra-low dynamic viscosity ($3.3\ mPa.s$ at 40°C) ensures effortless pumping, precise machine metering, and complete miscibility with water, polyols, and other organic solvents.
Excellent Cold-Weather Stability: Featuring a freezing point below -25°C, it remains completely stable and fluid during winter transportation and storage, preventing costly crystallization downtime.
