Amines, High-Purity Solvents

Methyldiethanolamine (MDEA)

Methyldiethanolamine (MDEA) Aqueous Solution (CAS 105-59-9)

This Methyldiethanolamine (MDEA) Aqueous Solution, identified by CAS 105-59-9, is a clear, colourless liquid. It is primarily utilized in gas treating applications for the selective removal of hydrogen sulfide (H2S) and carbon dioxide (CO2) from natural gas, refinery, and synthesis gases. Key characteristics include high selectivity for H2S over CO2, lower energy regeneration needs, excellent thermal stability, and low corrosivity. Beyond gas treating, it also functions as a pH control agent, corrosion inhibitor, and an intermediate in chemical synthesis, offering versatile industrial utility.

Attributes

Key Features and Benefits

Offers highly selective absorption of hydrogen sulfide.
Contributes to significant energy savings during regeneration.
Reduces equipment corrosion in processing units.
Minimizes operational fouling, improving system uptime.
Versatile for gas sweetening, CO2 absorption, and chemical synthesis.
Delivers high purity for consistent and reliable performance.
Effectively absorbs a range of acid gases from process streams.
Enhances overall system longevity and operational efficiency.

Specifications

Technical Highlights

Chemical Name: Methyldiethanolamine
CAS No.: 105-59-9
Molecular Formula: C5H13NO2
Appearance: Colorless to pale yellow liquid
Purity (GC, % wt): ≥99.0
Water Content (% wt): ≤0.5
Density @ 20°C (g/cm³): 1.037 – 1.042
Refractive Index @ 20°C: 1.468 – 1.470
Color (APHA): ≤50
Flash Point (PMCC, °C): 124

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Efficiently removes acidic gases like Hydrogen Sulfide (H₂S) and Carbon Dioxide (CO₂) from various gas streams.
Utilized for sweetening natural gas, enhancing its quality and safety for distribution and use.
Applied in refineries and industrial processes for treating refinery gas, synthesis gas, and hydrogen production.
Serves as a key component or catalyst in the manufacturing of polyurethanes.
Acts as a reliable pH buffer, maintaining stable acidity levels in diverse chemical processes.
Employed as a corrosion inhibitor, helping to prevent or reduce corrosion in industrial systems and equipment.