oxobarium;ketobarium;12231-51-5;1304-28-5;BARIUM OXIDE;Barium monoxide;Barium oxide (BaO);Barium oxide [UN1884]  [Poison];Barium oxide, obtained by calcining witherite;Barium protoxide;Baryta;Calcined baryta;EINECS 215-127-9;Oxyde de baryum [French];UN1884;223603_ALDRICH;288497_ALDRICH;554847_ALDRICH
oxobarium