Barium peroxide is a potent oxidizing agent utilized primarily in pyrotechnics and specialized metal manufacturing. It is a critical component for producing brilliant green flames in signaling flares.

In the CASE industry, it serves as a specialized bleaching agent for glass and ceramic glazes. Its ability to release oxygen at high temperatures facilitates the decolorization of industrial materials.

The chemical is also used in the synthesis of hydrogen peroxide and other high-purity barium salts. It provides a stable, solid source of active oxygen for high-energy reactions.