CAS 7789-23-3 appears in our catalog under these names: Potassium fluoride, 99.99% (metals basis) , Potassium fluoride, anhydrous, 99% , Potassium fluoride, ACS, 99% min , Potassium fluoride, 99.9% (metals basis) . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 2g, 10g, 50g, 250g, 1kg, 100g, 500g, 25g.