According to Reference.com, the formula for barium hydroxide is Ba(OH)2. Barium hydroxide is also known as caustic baryta and is formed by dissolving barium oxide (BaO) in water.
Caustic baryta is used in the manufacture of organic compounds, such as the refining of animal and vegetable oils. It is also important in the industrial preparation of beet sugar. In analytical chemistry, the compound is considered a strong base and is used for the titration of weak acids, especially organic acids.
Barium oxide, which reacts vigorously with water, is known as calcined baryta and is used as a dehydrating agent and in the manufacture of glass.