Ingredient · E222

Freshness Protected By Sodium Bisulfite

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Source

Not animal-derived

Allergen

Role in food

Sodium bisulfite is added to foods to prevent browning, inhibit the growth of bacteria, …

What it is

Sodium bisulfite is a chemical compound made from sulfur dioxide and sodium hydroxide. It is a white crystalline powder that dissolves in water. It is often used as a preservative and antioxidant in foods.

Why it's used

Sodium bisulfite is added to foods to prevent browning, inhibit the growth of bacteria, and preserve color and flavor. It is commonly found in dried fruits, processed potatoes, wine, and some seafood products.

Health notes

Sodium bisulfite is generally recognized as safe (GRAS) by the FDA when used as a preservative. It can cause allergic reactions in some individuals, particularly those with asthma. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated sodium bisulfite and established an acceptable daily intake. Evidence regarding its long-term effects at typical consumption levels is mixed, with some studies suggesting potential concerns and others finding no significant issues.

Allergen info

Not a major allergen. It does not contain gluten.

Products containing Freshness Protected By Sodium Bisulfite

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Wal-Mart Stores, Inc. Sour Cream & Chive Potatoes, Sour Cream & Chive Vegetable and Lentil Mixes High in sodium — 28% DV per serving 333kcal 7.4Protein 0Fat 77.8Carbs Wal-Mart Stores, Inc. Three Cheese Potatoes In A Savory Sauce With Romano, Ricotta & Parmesan Cheeses, Three Cheese Vegetable and Lentil Mixes High in sodium — 27% DV per serving 357kcal 7.1Protein 0Fat 78.6Carbs McIlhenny Company Spartan, Scalloped Potatoes Vegetable and Lentil Mixes High in sodium — 29% DV per serving 357kcal 7.1Protein 1.8Fat 71.4Carbs McIlhenny Company Potatoes Vegetable and Lentil Mixes High in sodium — 26% DV per serving 352kcal 7.4Protein 1.9Fat 74.1Carbs Wal-Mart Stores, Inc. Scalloped Potatoes, Scalloped Vegetable and Lentil Mixes High in sodium — 20% DV per serving 370kcal 7.4Protein 1.9Fat 74.1Carbs

Wal-Mart Stores, Inc. Great Value, Au Gratin Potatoes Vegetable and Lentil Mixes High in sodium — 25% DV per serving 357kcal 7.1Protein 1.8Fat 75Carbs Bruno's Supermarkets, Inc. Potato Classics Scalloped Vegetable and Lentil Mixes High in sodium — 27% DV per serving 370kcal 7.4Protein 1.9Fat 74.1Carbs

Tops Markets, LLC Classic Scalloped Potatoes, Classic Vegetable and Lentil Mixes High in sodium — 20% DV per serving 370kcal 7.4Protein 1.9Fat 74.1Carbs Tops Markets, LLC Sour Cream & Chive Potatoes, Sour Cream & Chive Vegetable and Lentil Mixes High in sodium — 28% DV per serving 333kcal 7.4Protein 0Fat 77.8Carbs Tops Markets, LLC Three Cheese Romano, Parmesan, Cheddar Potatoes, Three Cheese Vegetable and Lentil Mixes High in sodium — 27% DV per serving 357kcal 7.1Protein 0Fat 0.1Carbs Wal-Mart Stores, Inc. Applewood Smoked Cheddar Potato Casserole, Applewood Smoked Cheddar Vegetable and Lentil Mixes High in sodium — 20% DV per serving 393kcal 7.1Protein 5.4Fat 75Carbs Wal-Mart Stores, Inc. Aged White Cheddar & Jalapeno Potato Casserole, Aged White Cheddar & Jalapeno Vegetable and Lentil Mixes High in sodium — 25% DV per serving 350kcal 7.5Protein 7.5Fat 62.5Carbs

Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.