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Introduction and application of Aluminum Chlorohydrate

September 06, 2024

    Aluminum Chlorohydrate (ACH) is an inorganic polymer compound with the chemical formula HAlClO, also known as polyaluminum, hydroxylaluminum chloride, etc. It is a product between aluminum chloride and aluminum hydroxide, and is bridged by hydroxyl groups, with varying amounts of hydroxyl groups in the molecule. Aluminum Chlorohydrate is a colorless or yellow resinous solid, and its solution is a colorless or yellowish brown transparent liquid. The compound has strong bridging adsorption properties and is easily soluble in water. The hydrolysis process is accompanied by electrochemical, condensation, adsorption and precipitation physical and chemical processes. Because of its excellent flocculation ability, hydroxy-aluminyl chloride has been widely used in many fields.

    Water treatment : hydroxyaluminum chloride as a flocculant, mainly used in pure water, drinking water and domestic water supply standard water treatment. It can effectively reduce the filtration turbidity, shorten the filtration stroke, improve the production capacity, and improve the removal of iron, fluorine, cadmium, radioactive pollution, and oil floating capacity. In addition, it can reduce the dosage of chemicals, simplify the operation process, eliminate the effect of pH and secondary electrolyte addition, and reduce the overall production cost of tap water. In special wastewater treatment, hydroxyaluminum chloride can also increase the color removal function, remove total suspended solids (TSS) and heavy metals such as chromium, cadmium, lead, mercury, etc., as well as phosphorus removal, fluorine removal, oil removal flotsam .

    Medicine and cosmetics : hydroxyaluminum chloride is mainly used as an antiperspirant in medicine and cosmetics. It has an obvious effect of astringent sweat and can help relieve problems caused by excessive sweating such as body odor. It is commonly used in aerosol form products and is added to formulations as a dry spray powder. Commercially available dry powder is a loose hydrate containing a large amount of water. Hydroxy aluminum chloride, propylene glycol and dipropylene glycol solutions are commonly used in the manufacture of some dosage forms of antiperspirants. The maximum concentration allowed by the FDA for the use of Aluminum Chlorohydrate in cosmetics is 25%.

    Electronic industry : Because of the excellent electrical conductivity of hydroxy-aluminum chloride, it is also used in the electronic industry, such as the preparation of capacitors, circuit boards and so on.

    Other fields : In addition, hydroxyaluminum chloride can also be used in sugar liquid refining, daily chemicals .

    In short, Aluminum Chlorohydrate is a multifunctional compound and has been widely used in many fields.

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