Monoethanolamine (MEA), with CAS No. 141-43-5 and molecular formula C₂H₇NO, is a versatile amino alcohol renowned for its dual hydrophilic-hydrophobic properties, chemical reactivity, and wide industrial adaptability.

Key Industrial Applications

Gas Treatment: Primary absorbent for removing acidic gases (CO₂, H₂S) from natural gas, refinery gas, and flue gas; widely used in oil & gas processing and carbon capture systems (CCS) due to its high absorption efficiency and recyclability.

Chemical Synthesis: Intermediate for producing ethylene oxide derivatives, surfactants (e.g., alkylolamides), and plasticizers; raw material for polyurethane foam stabilizers and corrosion inhibitors.

Pharmaceuticals & Cosmetics: Emulsifier, pH adjuster, and humectant in pharmaceuticals (e.g., drug formulations, topical creams) and cosmetics (moisturizers, shampoos); enhances product stability and skin compatibility.

Textiles & Dyes: Neutralizer and softener in textile processing; solvent and dye-fixing agent for reactive dyes, improving color fastness and fabric (hand feel).

Metalworking & Corrosion Inhibition: Component of metal cutting fluids and rust inhibitors; forms a protective film on metal surfaces to prevent oxidation and corrosion.

Agrochemicals: Intermediate for pesticide formulations (e.g., herbicides, insecticides) and plant growth regulators; improves solubility and bioavailability of active ingredients.