Sodium selenite From Wikipedia, the free encyclopedia Jump to navigation Jump to search Not to be confused with Selenite (mineral). Sodium selenite Identifiers CAS Number (hydrate: 26970-82-1) 10102-18-8 (hydrate: 26970-82-1) N 3D model (JSmol) Interactive image ChEBI CHEBI:48843 Y ChEMBL ChEMBL112302 Y ChemSpider 23308 Y ECHA InfoCard 100.030.230 EC Number 233-267-9 KEGG D10530 N PubChem CID 24934 RTECS number VS7350000 UNII HIW548RQ3W Y UN number 2630 InChI InChI=1S/2Na.H2O3Se/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 Y Key: BVTBRVFYZUCAKH-UHFFFAOYSA-L Y InChI=1/2Na.H2O3Se/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 Key: BVTBRVFYZUCAKH-NUQVWONBAC SMILES [Na+].[Na+].[O-][Se]([O-])=O Properties Chemical formula Na 2 O 3 Se Molar mass 172.95 g·mol −1 Appearance colourless solid Density 3.1 g/cm 3 Melting point decomposes at 710 °C Solubility in water 85 g/100 mL (20 ...