CAS 7778-50-9 appears in our catalog under these names: Potassium Dichromate, Potassium dichromate, 0.25N Standardized Solution , Potassium dichromate, 0.025N Standardized Solution , Potassium dichromate, 0.1N Standardized Solution , Potassium dichromate, ACS, 99.0% min . Offered by: Chemat Brand, Thermo Scientific (Alfa Aesar). Available pack sizes: on request, 500ml , 1L, 500ml, 100g, 500g, 2.5kg, 2500g.