Dimorpholino Diethyl Ether
DMDEE, Bis(2-morpholinoethyl) Ether, 2,2-Dimorpholinodiethylether.
- CAS
- 6425-39-4
- EC
- 229-194-7
- Sectors
- Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers, Building & Construction
Dimorpholino Diethyl Ether (CAS 6425-39-4) is a specialized amine catalyst supplied as a pale brown to light brown oil, based on a bis(2-morpholinoethyl) ether structure that promotes the water-isocyanate reaction in one-component polyurethane foams and moisture-cured sealants. It provides exceptional stability in moisture-cured formulations, preventing premature reaction of NCO groups during storage in sealed containers.
As a blowing catalyst, DMDEE is highly effective in promoting the water-isocyanate reaction, which is essential for foam expansion. Its low-odor profile makes it a preferred choice for indoor construction sealants, adhesives, and pressurized aerosol foam cans.
This Technical Grade additive ensures consistent curing across various humidity levels without affecting the shelf life of the prepolymer. It is characterized by its high boiling point and low volatility, ensuring safety and performance in industrial manufacturing.
Typical Properties
| Molecular formula | C12H24N2O3 |
|---|---|
| Molecular weight | 244.33 g/mol |
| Form | Oil |
| Color | Pale Brown to Light Brown |
| Melting point | -28 °C |
| Boiling point | 175-176 °C @ Press: 8 Torr |
| Density | 1.0682 g/cm³ @ Temp: 20 °C |
| Water solubility | 100g/L at 20°C |
| Flash point | 295 °F |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 29349990 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Dimorpholino Diethyl Ether
Applications
- One-Component Foams (OCF): The industry-standard catalyst for aerosol polyurethane foams used for gap filling and thermal insulation in construction.
- Moisture-Cured Sealants: Provides reliable curing for PU-based joint sealants and structural adhesives used in the automotive and building sectors.
- Prepolymer Stabilization: Allows for the formulation of stable NCO-terminated prepolymers that react only upon exposure to atmospheric moisture.
Safety & Risks
Considered a Skin Irritant and Serious Eye Irritant. Prolonged exposure may cause respiratory discomfort. Utilize PPE such as nitrile gloves, protective eyewear, and adequate ventilation to ensure safe handling.
Packaging
Commonly available in 25 kg Jerry Cans, 210 kg Steel Drums, and 1,050 kg IBC Tanks.