Ingredient · E551

Silicon Dioxide As An Anticaking Agent

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add silicon dioxide to powdered foods to prevent clumping and ensure a free-flowing …

What it is

Silicon dioxide is a form of silica, which is a common mineral found in sand and quartz. It is manufactured by reacting silicon tetrachloride with oxygen and water at high temperatures. It is a fine, white powder that is insoluble in water.

Why it's used

Manufacturers add silicon dioxide to powdered foods to prevent clumping and ensure a free-flowing product. It works by absorbing moisture and coating particles, keeping them separated. It is commonly found in seasoning mixes, salt, powdered drink mixes, and baking mixes.

Health notes

Silicon dioxide is generally recognized as safe (GRAS) by the U.S. Food and Drug Administration (FDA) for use as an anticaking agent. International bodies like JECFA and EFSA have also evaluated it and found it safe for consumption. At the low levels used in food, it is not absorbed by the body and passes through undigested.

Allergen info

Silicon dioxide is not derived from any of the nine FDA major allergens and does not contain gluten.

Products containing Silicon Dioxide As An Anticaking Agent

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CLASSICO Chicken Parmigiana Pasta Dinners High in sodium — 22% DV per serving 173kcal 5.1Protein 2.0Fat 32.6Carbs Kraft Heinz Foods Company Buffalo Chicken Classic American Skillets Dinner Kit Pasta With Creamy Cheese Sauce And Premium Seasonings, Buffalo Chicken Pasta Dinners High in sodium — 37% DV per serving 329kcal 10Protein 10Fat 47.1Carbs Kraft Heinz Foods Company Chicken Parmesan Creamy Cheese Sauce With Pasta, Breading Mix & Seasoning Cheesy Skillets Dinner Kit, Chicken Parmesan Pasta Dinners High in sodium — 29% DV per serving 329kcal 11.4Protein 10Fat 45.7Carbs Kraft Heinz Foods Company Cheesy Potatoes, Bacon Scalloped Vegetable and Lentil Mixes High in sodium — 34% DV per serving 317kcal 10Protein 11.7Fat 40Carbs Kraft Heinz Foods Company Cheesy Potatoes Entrees, Sides & Small Meals High in sodium — 29% DV per serving 309kcal 10.9Protein 12.7Fat 41.8Carbs Kraft Heinz Foods Company Cheesy Skillets Dinner Kit Pasta Dinners High in sodium — 28% DV per serving 321kcal 11.9Protein 9.5Fat 47.6Carbs Kraft Heinz Foods Company Home Style Southwest Tortilla Pizza Mixes & Other Dry Dinners High in sodium — 46% DV per serving High in saturated fat — 20% DV per serving 332kcal 11.3Protein 10.5Fat 48.9Carbs Kraft Heinz Foods Company Macaroni & Cheese Dinner Pasta Dinners High in sodium — 43% DV per serving 369kcal 13.1Protein 4.8Fat 67.9Carbs Crunchy Taco Dinner Kit, Crunchy Kraft Heinz Foods Company Crunchy Taco Dinner Kit, Crunchy Mexican Dinner Mixes 293kcal 4.9Protein 12.2Fat 41.5Carbs Mild Taco Seasoning Mix, Mild Kraft Heinz Foods Company Mild Taco Seasoning Mix, Mild Seasoning Mixes, Salts, Marinades & Tenderizers 333kcal 0Protein 0Fat 66.7Carbs Soft Taco Dinner Kit Kraft Heinz Foods Company Soft Taco Dinner Kit Mexican Dinner Mixes High in sodium — 37% DV per serving 244kcal 6.1Protein 4.9Fat 42.7Carbs Taco Seasoning Mix, Taco Kraft Heinz Foods Company Taco Seasoning Mix, Taco Seasoning Mixes, Salts, Marinades & Tenderizers 333kcal 0Protein 0Fat 66.7Carbs
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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.