CAS: 21908-53-2 Molecular Formula: HgO Molecular Weight (g/mol): 216.59 MDL Number: MFCD00011045 InChI Key: UKWHYYKOEPRTIC-UHFFFAOYSA-N Synonym: mercuric oxide,mercury ii oxide,mercury oxide,mercuric oxide, red,red mercuric oxide,mercuric oxide, yellow,santar,red precipitate,mercury monoxide IUPAC Name: oxomercury SMILES: O=[Hg]