What is Monoethanolamine(cas no 141-43-5)?
Monoethanolamine (mea), also known as ethanolamine or 2-aminoethanol, is a colorless to pale yellow viscous liquid with a slight ammonia-like odor. It is produced through the reaction of ethylene oxide with ammonia, which can also generate diethanolamine (DEA) and triethanolamine (TEA) depending on the reaction ratio and manufacturing conditions. MEA is highly soluble in water and alcohol, and because it contains both amine and hydroxyl functional groups, it offers strong alkalinity, excellent hydrophilicity, and high chemical reactivity. These characteristics make it an important raw material used in many industrial sectors worldwide.

Benefits and Applications of Monoethanolamine (MEA)
Monoethanolamine Gas Treatment for CO2 and H2S Removal
One of the most important uses of Monoethanolamine is gas purification. MEA is widely used as an absorbent for acidic gases in natural gas processing, refinery gas treatment, synthesis gas purification, and flue gas treatment systems. It efficiently removes carbon dioxide (CO₂), hydrogen sulfide (H₂S), and sulfur dioxide (SO₂), helping achieve desulfurization and decarbonization goals. In the oil and gas industry, this process is known as gas sweetening, where MEA helps improve gas quality, reduce corrosion in pipelines and equipment, and ensure the gas meets transportation or industrial use standards.
Monoethanolamine in Detergent and Personal Care Products
Monoethanolamine cas no 141-43-5 is also widely used in the detergent and personal care industries. It functions as an alkalinity source, emulsifier, foam stabilizer, and thickening aid in many formulations. In household and industrial cleaners, MEA improves the removal of grease, oils, and dirt, making it valuable in laundry detergents, dishwashing liquids, and degreasers. In personal care products, it is used in shampoos, shower gels, liquid soaps, lotions, shaving creams, and hand creams. MEA derivatives such as cocamide MEA are especially common in hair care and skincare products because they help enhance texture, foam quality, and product stability.
Monoethanolamine in Polyurethane, Rubber and Coatings Industry
MEA has broad applications in industrial manufacturing. In the polyurethane industry, it is used as a catalyst, crosslinking agent, and intermediate in the production of foams, insulation materials, adhesives, and coatings. In the rubber industry, it can be used as a vulcanization accelerator, plasticizer, and foaming aid to improve flexibility, wear resistance, and product strength. In paints, inks, and coatings, Monoethanolamine works as a neutralizer, dispersant, and pH regulator, helping improve storage stability, flow properties, and final coating performance.
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Monoethanolamine Pharmaceutical and Agrochemical Applications
Monoethanolamine liquid is an important intermediate in pharmaceutical and agrochemical production. In pharmaceutical manufacturing, it is used as a pH buffer, emulsion stabilizer, and intermediate for the synthesis of active compounds and specialty salts. Its compatibility with many formulations makes it useful in injectable, antifungal, and anti-inflammatory products. In agriculture, MEA is used in herbicides, pesticides, and crop protection formulations. It helps improve the solubility of active ingredients, enhances formulation stability, and increases the effectiveness of agricultural chemicals in practical use.
Monoethanolamine in Textile Dyeing and Fabric Finishing
The textile industry also relies on Monoethanolamine for dyeing and finishing processes. It is used in dye synthesis, optical brighteners, antistatic agents, softening agents, and fixing agents. These applications help improve fabric whiteness, softness, color fastness, and resistance to static electricity. MEA can also be used in mothproofing and specialty finishing treatments, making textiles more durable and comfortable.
Monoethanolamine Corrosion Inhibitor for Metal Processing
In metalworking and industrial maintenance, Monoethanolamine solvent is widely used in cutting fluids, coolants, drilling fluids, boiler water treatment chemicals, and automotive cooling systems. It acts as a corrosion inhibitor and pH regulator, helping protect metal surfaces from rust and chemical attack. In machining operations, it also supports lubrication and heat control, which can extend tool life and improve production efficiency. MEA is additionally used in metal cleaning products to remove grease, oil residues, and rust from equipment and components.
Monoethanolamine Chemical Intermediate in Industrial Production
MEA is also a valuable chemical intermediate for producing many downstream products. It is used in the manufacture of ethylenediamine, piperazine, EDTA intermediates, specialty surfactants, resin additives, and lubricant chemicals. Because of its reactive amine and alcohol groups, Monoethanolamine is highly versatile in synthesis processes and remains an essential building block in modern chemical production.
Monoethanolamine in Construction Materials
In the construction industry, Monoethanolamine (MEA) is used as an additive in cement and concrete production. It can function as a grinding aid that improves milling efficiency, reduces energy consumption, and supports better particle dispersion. These benefits help manufacturers improve strength development and long-term durability in finished cement and concrete products.
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For companies looking to source high-quality monoethanolamin (CAS 141-43-5), TIANJIN GNEE BIOTECH CO., LTD. offers a reliable supply backed by over a decade of experience in chemical manufacturing and export. With strict quality control, competitive pricing, and flexible packaging options.






