Calcium permanganate Names IUPAC name Calcium oxido-trioxo-manganese[1] Identifiers CAS Number 10118-76-0 Y 3D model (JSmol) Interactive image ChemSpider 23333 Y ECHA InfoCard 100.030.280 EC Number 233-322-7 PubChem CID 24959 RTECS number EW3860000 UNII 720Y4E8F5H InChI InChI=1S/Ca.2Mn.8O/q+2;;;;;;;;;2*-1 Y Key: HYSMCTNXSYZEHS-UHFFFAOYSA-N Y InChI=1/Ca.2Mn.8O/q+2;;;;;;;;;2*-1/rCa.2MnO4/c;2*2-1(3,4)5/q+2;2*-1 Key: HYSMCTNXSYZEHS-KTXORSEZAZ SMILES [Ca+2].O=[Mn](=O)(=O)[O-].[O-][Mn](=O)(=O)=O Properties Chemical formula Ca(MnO4)2 Molar mass 277.9493 g/mol Appearance purple crystals deliquesent Density 2.49 g/cm3 Melting point 140 °C (284 °F; 413 K) (decomposes, tetrahydrate) Solubility in water tetrahydrate: 331 g/100 mL (14 °C) 338 g/100 mL (25 °C) Solubility soluble in ammonium hydroxide decomposes in alcohol Related compounds Other cations Sodium permanganate Ammonium permanganate Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is Y ?) Infobox references