CAS 1303-86-2 appears in our catalog under these names: Boron oxide, Puratronic|r, (H{2}O 200ppm), 99.999% (metals b, Boron oxide, 98% , Boron oxide, 99.999% (metals basis) , Boron oxide, 99.98% (metals basis) , Boron oxide, 97.5% min, typically 98.5% . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1cyl, 10cyl, 2500g, 500g, 2g, 10g, 50g, 100g.