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Monoethanolamine: A Multi-Purpose Organic Amine for Industrial and Consumer Applications

Monoethanolamine (chemical formula C₂H₇NO, abbreviated as MEA) is a colorless or pale yellow viscous liquid with an ammonia-like odor and is an important organic chemical raw material and intermediate. It has a wide range of applications in the chemical, pharmaceutical, textile, petroleum, water treatment, and consumer product industries. The main uses of monoethanolamine include its application as a neutralizing agent, emulsifier, buffer, and intermediate in organic synthesis.

    Major Application Fields

    In the chemical industry, monoethanolamine is a commonly used neutralizing agent that can react with acids to form the corresponding amine salts, widely used for pH adjustment. It is also used as an emulsifier to stabilize oil-water emulsions, widely applied in the production of coatings, inks, and adhesives. Additionally, monoethanolamine can act as a buffer to regulate the acidity and alkalinity of chemical reactions, ensuring their smooth progress.

    In the pharmaceutical industry, monoethanolamine is used as an intermediate in drug synthesis. It can participate in various chemical reactions to produce compounds with medicinal value. For example, in the synthesis of certain antibiotics and cardiovascular drugs, monoethanolamine can act as an intermediate. Additionally, monoethanolamine can be used in the preparation of injections and oral liquids as a pH regulator and stabilizer.

    In the textile industry, monoethanolamine is used as a fiber treatment agent and softening agent. It can improve the flexibility and anti-static properties of fibers, enhancing the hand feel and processing performance of fabrics. Monoethanolamine is also used in the post-treatment of textiles to enhance their wear resistance and wrinkle resistance.

    In the petroleum industry, monoethanolamine is used as a natural gas desulfurizer and acid gas absorbent in petroleum refining. It can effectively remove hydrogen sulfide and carbon dioxide from natural gas, improving its quality. In petroleum refining processes, monoethanolamine can absorb acidic gases, reducing equipment corrosion.

    In water treatment, monoethanolamine is used as a pH regulator and corrosion inhibitor. It can adjust the acidity and alkalinity of water to prevent pipe corrosion. For example, in industrial cooling water systems, monoethanolamine can be used to adjust the pH of water to prevent scale formation and pipe corrosion.

    In the consumer product industry, monoethanolamine is widely used in personal care products and cleaning agents. It can act as an emulsifier and pH regulator in the production of shampoos, body washes, and liquid soaps. Additionally, monoethanolamine can be used to produce surfactants for cleaning agents and detergents.

    Despite its wide range of applications, monoethanolamine is corrosive and toxic, and its use and storage require strict safety precautions. Monoethanolamine easily absorbs moisture in humid environments, so it needs to be stored in a sealed container. Additionally, solutions of monoethanolamine are somewhat corrosive, and appropriate protective equipment should be worn during use to avoid contact with skin and eyes. In industrial production, the use of monoethanolamine typically occurs in closed systems to minimize environmental impact.

    Specifications

    Product Name Monoethanolamine
    Chemical Formula C2H7NO
    Molecular Weight 61.08 g/mol
    Appearance Colourless transparent viscous liquid
    Melting Point 10.5℃
    Boiling Point 170.4℃
    Density 1.0180 g/cm³
    CAS NO 141 - 43 - 5
    HS Code 2922110000
    EINECS NO 205 - 483 - 3
    Application Applied for gas purification, synthesis of surfactants, pH regulation in cosmetics, and as a cement accelerator.

    Quality Control Sheet

    Product Name Monoethanolamine
    ITEM STANDARD VALUE(%) TEST VALUE(%)
    Monoethanolamine assay,% ≥99.0 99.82
    Water content, % ≤0.3 0.0094
    Color,Pt-Co ≤10 5
    Density (20℃)/(g/㎝3) 1.014~1.019 1.015
    TEST CONCLUSION Conform to the standard Q/LC 001-2022

    In summary

    In summary, monoethanolamine, as an important organic chemical raw material, plays a key role in multiple industries. It not only enhances product performance and quality but also supports the development of modern industry. With continuous technological advancements, the application prospects for monoethanolamine will be even broader.