N-Methyldiethanolamine (MDEA) is a clear, colorless to pale yellow liquid with an amine-like odor. It is a tertiary amine containing two hydroxyethyl groups and one methyl group, making it a highly efficient selective solvent for acid gas treatment. MDEA is widely used in natural gas processing, petrochemical refining, and various industrial gas purification systems due to its low vapor pressure, low corrosiveness, and high selectivity for H₂S over CO₂.
Applications
Gas Sweetening: Used in amine gas treating units for H₂S and CO₂ removal Petroleum Refining: Acid gas scrubbing in hydrocracking and catalytic reforming Chemical Intermediate: For surfactants, corrosion inhibitors, and emulsifiers Water Treatment: pH adjustment and neutralizing agent Polyurethane Industry: Additive in catalyst systems and foam formulations
Typical Properties
Property
Value
Unit
Test Method
Appearance
Clear, colorless to pale yellow liquid
-
Visual
Molecular Formula
C5H13NO2
-
-
Molecular Weight
119.16
g/mol
-
Boiling Point
~247
°C
ASTM D1120
Flash Point (Closed Cup)
~135
°C
ASTM D93
Density @ 20°C
~1.03
g/cm³
ASTM D4052
Purity
≥ 99.0
wt%
GC
Vapor Pressure @ 25°C
< 0.01
mmHg
-
Water Solubility
Miscible
-
-
Packaging
200L Drum (Net Weight: ~220 kg) IBC Tank (Net Weight: ~1100 kg) Bulk tank truck or ISO tank on request
Safety & Handling
Avoid contact with skin and eyes; may cause irritation Use in well-ventilated areas and wear suitable personal protective equipment Store in a cool, dry, and well-sealed container away from oxidizing agents Refer to the SDS for full safety and handling guidelines
Shelf Life
12 months when stored under recommended conditions
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