CAS 16481-66-6 appears in our catalog under these names: Potassium metaborate hydrate, 99+% , Potassium metaborate hydrate, Potassium metaborate hydrate (3:4), ≥95%, Potassium metaborate hydrate, ≥95%. Offered by: Thermo Scientific (Alfa Aesar), Biosynth, Chemat, Fluorochem. Available pack sizes: 250g, 1kg, 2.5kg, 2000g, 5g, 25g, 100g, 500g.