Aluminum chloride is a chemical compound made up of aluminum and chlorine, with the formula AlCl3. It appears as a white or yellowish solid and is highly soluble in water. This compound is commonly used in various industrial applications, including the production of aluminum metal and as a catalyst in chemical reactions. In addition to its industrial uses, aluminum chloride is also found in some personal care products, such as antiperspirants, due to its ability to block sweat glands. It can be produced through several methods, including the reaction of aluminum with chlorine gas or by reacting aluminum oxide with hydrochloric acid.