CAS 7772-98-7 appears in our catalog under these names: Sodium thiosulfate, anhydrous, 98+% , Sodium thiosulfate, 0.01N Standardized Solution , Sodium thiosulfate, 0.1N Standardized Solution , Sodium thiosulfate, 1.0N Standardized Solution , Sodium thiosulfate, Acculute Standard Volumetric Solution, F. Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 2500g, 500g, 1L, 20L, 1unit, 6units.