CAS 20667-12-3 appears in our catalog under these names: Silver(I) oxide, 99.99% (metals basis) , Silver(I) oxide, Electrical Grade , Silver(I) oxide, 99+% (metals basis) , Silver(I) oxide, 99.99% (metals basis) , Silver(I) oxide, Electrical Grade . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, *4x25g, 250g, 100g, 500g, 1g, 5g, 1kg.