Contributing

How is aluminium chloride used in the Gattermann Koch reaction?

How is aluminium chloride used in the Gattermann Koch reaction?

Aluminium chloride can also be used to introduce aldehyde groups onto aromatic rings, for example via the Gattermann-Koch reaction which uses carbon monoxide, hydrogen chloride and a copper(I) chloride co-catalyst.

What can aluminum chloride be used for over the counter?

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.

How does aluminum chloride work as an antiperspirant?

Aluminum chloride is commonly used topical antiperspirant. It is proposed that aluminum chloride works by causing an obstruction of the distal sweat gland ducts, where the metal ions precipitate with mucopolysaccharides, damaging epithelial cells along the lumen of the duct and forming a plug that blocks sweat output [A32368].

How is aluminum chloride hexahydrate converted to ACH?

A process is described for the direct chlorination of hydrated alumina (preferably alumina trihydrate) to aluminum chloride hexahydrate (ACH) by reaction with concentrated hydrochloric acid. Preferably all of the initial hydrated alumina is converted to ACH.

What makes aluminium chloride and chlorine chloride yellow?

They consist of aluminium and chlorine atoms in a 1:3 ratio, and one form also contains six waters of hydration. Both are white solids, but samples are often contaminated with iron (III) chloride, giving a yellow color. The anhydrous material is important commercially. It has a low melting and boiling point.

Can you use aluminum chloride as an antiperspirant?

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.