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    Ammonium Hydroxide - Taiwan

    Ammonium Hydroxide - Taiwan in Tradeasia

    IUPAC Name

    Azanium Hydroxide

    Cas Number

    1336-21-6

    HS Code

    2825.90.50

    Formula

    H5NO

    Basic Info

    Appearance

    Colorless Liquid

    Common Names

    Ammonium Hydrate, Ammonia Aqueous, Ammonia Hydrate

    Packaging

    25 kg drums, 25 kg jerrycan/30 kg jerrycan, 210/220 kg HDPE drum, 24CBM ISO tanks

    Ammonium hydroxide, also referred to as aqueous ammonia, is represented by the chemical formula NH4OH or denoted as NH3 (aq). It possesses solubility in water and emits a pungent odor, presenting itself as a clear, colorless liquid. When dissolved in water, it yields an exceptionally basic solution. In a 1M ammonia solution, approximately 1.42% of the ammonia transforms into ammonium, resulting in a high pH of 11.63.

    Manufacturing Process

    The production process of ammonium hydroxide encompasses the following stages:

    1. Ammonia Synthesis
    Ammonia is synthesized using the Haber-Bosch process, wherein nitrogen and hydrogen undergo a reaction at elevated temperatures and pressures with the aid of a catalyst.

    2. Ammonia Absorption
    The produced ammonia gas is subsequently absorbed in water to create ammonium hydroxide. This absorption can be achieved through various methods, including direct dissolution or absorption in a falling-film absorber.

    3. Purification of Ammonium Hydroxide
    The resulting solution undergoes purification to eliminate any impurities, such as carbon dioxide or other gases. Purification methods may involve distillation or aeration.

    4. Ammonium Hydroxide Concentration
    The purified solution is then concentrated to the desired strength using techniques like evaporation or reverse osmosis. The concentration level is adjusted based on the intended application of the ammonium hydroxide.

    Food Industry

    Ammonium hydroxide and other ammonia-based substances are commonly employed in food manufacturing. The Food and Drug Administration (FDA) has deemed ammonium hydroxide as safe, following the "generally recognized as safe" (GRAS) classification. It is approved for use as a leavening agent, pH control agent, and surface-finishing agent in food, with no restrictions other than adherence to current good manufacturing practices.

    Detergent Industry

    Ammonium hydroxide is a constituent of various cleaning agents and is present in numerous formulations designed for window cleaning.

    Waste Water Treatment

    Ammonium hydroxide is frequently employed in the production of chloramine, a disinfectant known for its prolonged activity in stagnant water pipes, thereby minimizing the potential for waterborne infections.

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