CAS 7697-37-2 appears in our catalog under these names: Nitric acid, 65-70%, 99.9999% (metals basis) , Nitric acid, ACS, 68.0-70.0% , Nitric acid, 1.0N Standardized Solution , Nitric acid, 0.1N Standardized Solution , Nitric acid, 2.0N Standardized Solution . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25ml, 250ml, 500ml, 454g, 3178g, *6x3178g, 1L, 100ml .