CAS 7601-90-3 appears in our catalog under these names: Perchloric acid, 70%, 99.9985% (metals basis) , Perchloric acid, 0.1N in Acetic Acid Standardized Solution , Perchloric acid, ACS, 48-50% , Perchloric acid, ACS, 69.0-72.0%, redistilled , Perchloric acid, 70% aq. soln. . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 5ml, 50ml, 250ml, 2500ml , 1L, 500ml, 2.5L, 500ml .