CAS 10117-38-1 appears in our catalog under these names: Potassium sulfite, 90%, pure, Potassium sulfite, 90.00%, POTASSIUM SULFITE, POTASSIUM SULFITE, 90%, Dipotassium sulfite, 90%, 90%. Offered by: Thermo Scientific (Acros), Chemat, Sigma-Aldrich, Fluorochem. Available pack sizes: 1KG, 2.5KG, 250g, 25G, 3KG, 100g, 500g.