https://www.bakechem.com/products/propylene-glycol-emulsifier-in-food-e1520-cas-no-57-55-6.html Propylene Glycol Emulsifier E1520 Food Additive E Number: E 1520 Ingredient | CAS No.: 57-55-6 Supplier Propylene Glycol, E1520 food additive, CAS No.: 57-55-6, is an organic compound with chemical formula C3H8O2.All Rights Reserved