Potassium propionate is a: Preservative.
Any Preservative listed in Table 3 can be acceptable for use in all products conforming to:
CS 117-1981
CS 291-2010
Note: Unless otherwise specified, food additive provisions apply to the food category indicated (e.g. Dairy), as well as to all subcategories of that category (e.g. Cheese, Ripened Cheese, etc.).