Aluminum chloride,CAS 7446-70-0

Aluminum chloride is a noncombustible but highly reactive whitish-gray, yellow, or green powder or liquid. Strong, acidic, irritating odor like hydrochloric acid.The vapor consists of double molecules Al2Cl6 . Soluble in water.

Aluminium chloride (AlCl3) is the main compound of aluminium and chlorine. It is white, but samples are often contaminated with iron trichloride, giving it a yellow colour. The solid has a low melting and boiling point. It is mainly produced and consumed in the production of aluminium metal, but large amounts are also used in other areas of chemical industry. The compound is often cited as a Lewis acid. It is an example of an inorganic compound that "cracks" at mild temperature, reversibly changing from a polymer to a monomer.

Aluminum chloride, anhydrous appears as a white to gray powder with a pungent odor. Corrosive to tissue and toxic by ingestion.|Aluminum chloride, solution appears as a straw-colored liquid. Denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion.|DryPowder; Liquid; PelletsLargeCrystals; WetSolid

Aluminum chloride, anhydrous appears as a white to gray powder with a pungent odor. Corrosive to tissue and toxic by ingestion.|Aluminum chloride, solution appears as a straw-colored liquid. Denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion.|Aluminium trichloride is an aluminium coordination entity. It has a role as a Lewis acid.|Aluminum chloride is a chemical compound with the chemical formula AlCl3. When contaminated with iron chloride, it often displays a yellow color compared to the white pure compound. It is used in various chemical applications as a Lewis base, with anhydrous aluminium trichloride being the most commonly used Lewis acid. It may also be found in over-the-counter as an antiperspirant or prescription products as an antihemorrhagic agent. In antiperspirant products, FDA approves the use of aluminum chloride as an active ingredient up to 15%, calculated on the hexahydrate form, in an aqueous solution nonaerosol dosage form.|A compound with the chemical formula AlCl3; the anhydrous salt is used as a catalyst in organic chemical synthesis, and hydrated salts are used topically as antiperspirants, and for the management of HYPERHYDROSIS.

Aluminum chloride Use and Manufacturing
Methods of Manufacturing
...From aluminum metal in heated stream of hydrochloric acid gas.|By reaction of bauxite with coke and chlorine at about 875 °C|... Anhydrous aluminum chloride is manufactured by the exothermic reaction of chlorine, Cl2, vapor with molten aluminum. The aluminum may be scarp, secondary ingot of varying purity, or prime ingot. Melting of additional metal feed, external cooling of the reactor, and regulation of the chlorine feed rate, control the reactor temperature between 600-750 °C. Chlorine is fed into the molten aluminum pool below the pool's surface. Aluminum chloride sublimes out of the pool and into a condensing vessel where the product solidifies on the condenser walls. ... The aluminum chloride grows into teardrop-shaped crystals which are periodically removed, crushed, screened, and packaged under a dry air or nitrogen atmosphere.|By reaction of purified gaseous chlorine with molten aluminum; by reaction of bauxite with coke and chlorine at approximately 875 °C.|In 1948 BASF commercialized the process of catalytic chlorination of gamma-alumina in a fluidized bed.

Uses
Aluminum chloride has extensive commercial applications. It is used primarily in the electrolytic production of aluminum. Another major use involves its catalytic applications in many organic reactions, including Friedel-Crafts alkylation, polymerization, isomerization, hydrocracking, oxidation, decarboxylation, and dehydrogenation. It is also used in the production of rare earth chlorides, electroplating of aluminum and in many metal finishing and metallurgical operations.