M-Xylylenediamine
Low Viscosity and Ambient-Temperature Curing: Enables facile processing and effective application under standard conditions.
Exceptional Thermal Stability: The aromatic benzene ring configuration confers superior heat resistance relative to vinylamine-based compounds.
Remarkable Chemical Resilience: Demonstrates outstanding stability in aqueous environments and resistance to acidic, alkaline, and various chemical media.
Broad Applicability: Suitable for encapsulation processes, adhesive bonding applications, and protective anti-corrosion coating systems.
Physical Characteristics of m-Xylylenediamine
m-Xylylenediamine (MXDA) presents as a transparent liquid with a distinct almond-like aroma. The material exhibits hygroscopic properties, developing a yellowish tint following extended atmospheric exposure. Its viscosity approximates that of dibutyl phthalate, and it demonstrates complete miscibility with both aqueous and organic solvent systems.
Technical Performance and Industrial Applications
Functioning as an epoxy curing agent, MXDA represents an aliphatic amine compound incorporating an aromatic moiety. The substance combines low dynamic viscosity with capacity for room-temperature polymerization. The integrated benzene ring structure enhances the thermal performance of cured epoxy networks compared to vinylamine derivatives. Furthermore, the cured systems exhibit exceptional chemical resilience, maintaining stability against hydrolytic degradation, acidic/alkaline environments, and diverse aggressive media. These characteristics enable broad industrial utilization in encapsulation formulations, structural adhesives, and corrosion-protective coating systems.
Chemical Name | m-Xylylenediamine |
Other Name | 1,3-Bis(aminomethyl)benzene;MXDA;1,3-Benzenedimethanamine |
CAS | 1477-55-0 |
EINECS | 216-032-5 |
Type | Pharmaceutical raw materials; Organic intermediates; Pharmaceutical, pigment, synthetic material intermediates |
Molecular Formula | C8H12N2 |
Molecular Weight | 136.19 |
Melting point | 14°C |
Boiling point | 265 °C745 mm Hg(lit.) |
Density | 1.032 g/mL at 25 °C(lit.) |
Vapor pressure | 15 mm Hg ( 145 °C) |
Refractive index | n20/D 1.571(lit.) |
Fp | >230 °F |
Form | Liquid |
Pka | 9.37±0.10(Predicted) |
Color | Clear slightly yellow |
Water Solubility | Miscible |
Primary Applications of m-Xylylenediamine (MXDA)
MXDA serves as a key intermediate in multiple industrial sectors, principally employed in manufacturing epoxy curing agents, photosensitive polymers, rubber additives, polyurethane materials, and coating systems. As a reactive component, it functions as a fundamental building block for polyurethane resins and modified epoxy formulations. Additional applications encompass the production of pesticide formulations, nylon polymers, textile finishing agents, corrosion inhibitors, chelating agents, lubricant additives, and paper processing chemicals.
Functional Characteristics and Derivative Applications
The distinct aliphatic-aromatic hybrid structure of MXDA confers exceptional physicochemical properties, enabling diverse implementations. Both MXDA and its cyclic hydrogenated derivatives demonstrate high efficacy as epoxy curing agents, characterized by low viscosity, operational convenience, and efficient ambient-temperature curing capability. The resulting crosslinked networks exhibit superior thermal stability, hydrolytic resistance, and chemical inertness, while producing optically transparent cured surfaces with smooth topography.
Furthermore, MXDA constitutes a vital intermediate in fine chemical synthesis. It participates in polyamide formation through polycondensation with dicarboxylic acids, and enables preparation of m-xylene diisocyanate—a crucial monomer for polyurethane production. Hydrogenated benzene ring derivatives further facilitate diisocyanate synthesis. Current developmental applications include rubber vulcanizing agents, agricultural chemicals, fiber stabilizers, surfactant compounds, and specialized chemical additives.
