CAS 137-40-6 appears in our catalog under these names: Propionic acid sodium, Sodium Propionate, Sodium propionate, 99% , Sodium Propionate, >98.0%(T), Propionic acid, sodium salt, 99.0-100.5%. Offered by: Dr. Ehrenstorfer, TRC, Thermo Scientific (Alfa Aesar), TCI, Thermo Scientific (Acros). Available pack sizes: 250mg, 5g, 2500g, 500g, 25g, 5KG, 1KG, 100g.