can't read?
Barium oxide, BaO, is a white hygroscopic non-flammable compound.
B 1342 (OTTO) Barium oxide, 99.99% - used in the synthesis of the high-κ material BST (barium strontium titanate). B 1342 (OTTO) Barium oxide, 99.99% - used in the study of NOX storage.