CAS 12031-80-0 appears in our catalog under these names: Lithium peroxide, 95% , Lithium peroxide, 95%, LITHIUM PEROXIDE, TECH., 90%, LITHIUM PEROXIDE,99.9% TRACE METALS BAS&. Offered by: Thermo Scientific (Alfa Aesar), Thermo Scientific (Acros), Sigma-Aldrich. Available pack sizes: 25g, 100g, 500g, 10g, 50G.