There are several uses for barium hydroxide, such as to hydrolyse one of the two equivalent ester groups in dimethyl hendecanedioate.
Barium hydroxide has also been used, as well, in the decarboxylation of amino acids liberating barium carbonate in the process.
It is also used in the preparation of cyclopentanone,diacetone alcohol and D-gulonic γ-lactone.