Also Called: Arsenic oxide (As2O3); Arsenic trioxide; Arsenous oxide; diarsenic trioxide; Arsenic oxide (As2O3) [Arsenic trioxide; Diarsenic trioxide];arsenic oxide;Arsenic (III) oxide;diarsenic trioxide arsenic trioxide;Arsen(III)-oxid;Arsenic and inorganic arsenic compounds;Arsenic trioxide, diarsenic trioxide