CAS 7778-77-0 appears in our catalog under these names: Potassium dihydrogen phosphate, Puratronic½, 99.999% (metal , Potassium dihydrogen phosphate, 98+% , Potassium dihydrogen phosphate, ACS, 99.0% min , Potassium phosphate, 0.5M buff , Potassium phosphate, 0.2M buff . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 100g, 2500g, 500g, 250g, 1kg, 250ml, 500ml.