AlF3, or aluminum trifluoride, is a chemical compound composed of one aluminum atom and three fluorine atoms. It is a white, crystalline solid that is commonly used in the production of aluminum metal and as a catalyst in various chemical reactions. AlF3 has a high melting point and is known for its stability under normal conditions. In addition to its industrial applications, AlF3 is also used in the manufacture of fluoride glasses and as a flux in metallurgy. Its unique properties make it valuable in the production of aluminum fluoride, which is essential for the electrolytic process in aluminum smelting.