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Anhydrous aluminium chloride is a powerful Lewis acid, capable of forming Lewis acid-base adducts with even weak Lewis bases such as benzophenone and mesitylene. [14] It forms tetrachloroaluminate ([AlCl 4] −) in the presence of chloride ions. Aluminium chloride reacts with calcium and magnesium hydrides in tetrahydrofuran forming ...
The variation most commonly used in deodorants and antiperspirants is Al 2 Cl(OH) 5 (dialuminium chloride pentahydroxide). Aluminium chlorohydrate is also used as a coagulant in water and wastewater treatment processes to remove dissolved organic matter and colloidal particles present in suspension.
Aluminium, the third most common element in the Earth's crust (after oxygen and silicon), serves no function in living cells, but is toxic in large amounts, depending on its physical and chemical forms and magnitude, duration, frequency of exposure, and how it was absorbed by the human body. [38] Transferrins can bind aluminium. [39]
A large fraction of the chemical elements that occur naturally on the Earth's surface are essential to the structure and metabolism of living things. Four of these elements (hydrogen, carbon, nitrogen, and oxygen) are essential to every living thing and collectively make up 99% of the mass of protoplasm. [1]
That aluminium in deodorants applied to the skin is a risk factor for some cancers (notably breast cancer) and some forms of dementia; That aluminium in antiperspirants can enter the body (possibly through shaving cuts) That aluminium in alum "natural deodorant" products is "safer" because it is "too large" to enter the body
Aluminium zirconium tetrachlorohydrex gly is the INCI name for a preparation used as an antiperspirant in many deodorant products. It is selected for its ability to obstruct pores in the skin and prevent sweat from leaving the body. Its anhydrous form gives it the added ability of absorbing moisture.
Anhydrous aluminium chloride is used as a catalyst in chemical and petrochemical industries, the dyeing industry, and in synthesis of various inorganic and organic compounds. [166] Aluminium hydroxychlorides are used in purifying water, in the paper industry, and as antiperspirants. [166]
Aluminium has a high chemical affinity to oxygen, which renders it suitable for use as a reducing agent in the thermite reaction. A fine powder of aluminium reacts explosively on contact with liquid oxygen ; under normal conditions, however, aluminium forms a thin oxide layer that protects the metal from further corrosion by oxygen, water, or ...