Barium hydroxide is a chemical compound with the chemical formula Ba(OH)2. The monohydrate (x = 1), known as baryta or baryta-water, is one of the principal compounds of barium. This white granular monohydrate is the usual commercial form.
Barium hydroxide
Barium is a chemical element; it has symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element.
Barium
Oxidized barium
Sir Humphry Davy, who first isolated barium metal
Benitoite crystals on natrolite. The mineral is named for the San Benito River in San Benito County where it was first found.