Tertiary Amine Catalyst DMDEE 2,2-Dimorpholinodiethylether CAS 6425-39-4

Product Overview

DMDEE (CAS No. 6425-39-4), chemically identified as 2,2-Dimorpholinodiethylether, is an advanced industrial-grade amine catalyst specifically engineered for the selective activation of isocyanate-water reactions. This targeted mechanism is an absolute requirement for driving the curing process in moisture-cured polyurethane (PU) systems. Presenting visually as a clear to light-yellow liquid with a remarkably smooth, consistent viscosity, it emits a distinctively mild, low-odor profile that immediately improves the sensory environment on the manufacturing floor. With a molecular formula of C₁₂H₂₄N₂O₂ and a precise molecular weight of 228.33 g/mol, this liquid catalyst (density 0.98 g/cm³) delivers exceptional stability in one-component formulations where curing strictly relies on ambient atmospheric moisture. Its unique morpholine-derived molecular structure makes it a critical component in construction adhesives, textile coatings, and medical devices, seamlessly combining rapid curing kinetics with superior mechanical properties. Furthermore, it serves as a highly efficient, cost-optimized alternative to mainstream international brands like Niax and Dabco. Fully compliant with rigorous global market entry standards, including REACH and GB certifications, it ensures that your terminal products face zero regulatory friction when expanding into international markets.

Features & Performance

Moisture-Sensitive Catalysis

DMDEE’s highly specific structure enables targeted activation of water-induced cross-linking in one-component PU sealants and adhesives. This characteristic provides a critical operational advantage in applications where on-demand, predictable curing is necessary. Under standard 50% relative humidity (RH) conditions, the formulation achieves tack-free times of ≤ 10 minutes—a reaction rate significantly faster than traditional catalysts such as DMEA (dimethylaminoethanol). When integrated into polyurethane foams, this rapid moisture response translates directly to a 40% reduction in overall cure time. This acceleration allows manufacturers to shorten production cycles and increase throughput without compromising the tactile flexibility or structural integrity of the final foam product.

Broad System Compatibility & Precise Dosage

This catalyst demonstrates extensive compatibility across a wide spectrum of isocyanate systems, including TDI, MDI, and IPDI base materials. Beyond traditional formulations, it maintains exceptional stability when paired with new-generation, eco-friendly blowing agents like HFOs, ensuring a smooth, consistent foaming process entirely free from premature cross-linking. To assist formulators in optimizing material costs while maintaining peak performance, we provide precise dosage guidelines: recommended addition levels range strictly between 0.3% and 1.5% for both one-component foam (OCF) and two-component systems. This precise control helps engineers dial in the exact reaction speed required for their specific manufacturing environment.

Low Volatility and Odor Control

With volatile organic compound (VOC) emissions strictly limited to ≤5 ppm, DMDEE easily satisfies the most demanding indoor air quality requirements. This makes the catalyst highly suitable for sensitive indoor applications, ranging from acoustic panels installed in corporate offices and educational facilities to medical-grade foams utilized in hospital mattresses and wheelchair cushions. The inherently low odor profile not only ensures end-user satisfaction but also significantly enhances worker comfort during the manufacturing phase. By minimizing irritating fumes on the factory floor, facilities can often reduce their reliance on heavy, energy-intensive specialized ventilation systems.

Thermal and Chemical Resistance

Engineered for harsh operational environments, DMDEE exhibits excellent stability in high-temperature settings, maintaining its catalytic integrity at temperatures up to 150°C. This thermal endurance ensures long-term, reliable performance in demanding applications such as automotive engine compartment sealants and industrial oven coatings. Furthermore, the cured matrix strongly resists degradation when exposed to aggressive chemical media, including industrial oils, heavy greases, and weak acids. By preventing premature chemical breakdown, this resistance effectively extends the practical service life of coated components by up to 30% when compared to formulations relying on less stable, conventional catalysts.

Sustainable and Compliant Formulation

Aligning with global green manufacturing initiatives, DMDEE is fully compliant with FDA (Food and Drug Administration) regulations for indirect food contact, as well as the EU Cosmetics Regulation (EC 1223/2009) for personal care applications. Toxicological assessments confirm it is non-toxic, demonstrating an LD50 > 2000 mg/kg in rat oral tests. Environmentally, the compound is highly biodegradable, achieving an 80% degradation rate within 28 days according to OECD 301B testing protocols. These attributes allow manufacturers to confidently pursue corporate sustainability goals and secure strict eco-label certifications for their consumer-facing products.