CAS 7783-28-0 appears in our catalog under these names: Ammonium hydrogen phosphate, tech., P{2}O{5} 53% min , Ammonium hydrogen phosphate, ACS, 98.0% min , Ammonium hydrogen phosphate, 98% . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1kg, 5kg, 250g, 500g.