If you wonder why the metals found in Group II, in peridic tables, are called alkaline, the response is linked to the fact that they have the property to form solutions having higher pH levels. These solutions, whose pH is greater than 7, are called basic or alkaline. Alkaline solutions are used in soaps, detergents, cleaning solutions, medication or bio-diesel fuels. Alkaline solutions may consist of sodium hydroxide, potassium hydroxide, magnesium hydroxide or calcium carbonate, each of them having diverse applications in different industries.
Sodium hydroxide or caustic soda, has a powerful chemical base and it is hygroscopic. It is used in soaps, textiles, paper and food processing.
Potassium hydroxid or caustic potash represents an inorganic compound that can be used in various industrial applications, such as diesel manufacturing or alkaline batteries electrolytes manufacturing.
Magnesium hydroxide is used for medical purposes, such as laxative or antiacid, or cosmetic purposes, such as antiperspirants.