Ingredient · E551

Silicon Dioxide To Reduce Caking

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add silicon dioxide to powdered foods to prevent clumping and caking, helping them …

What it is

Silicon dioxide is a form of silica, which is a natural mineral made of silicon and oxygen. It is manufactured by reacting sodium silicate with a mineral acid. It is also found naturally in plants and some animals.

Why it's used

Manufacturers add silicon dioxide to powdered foods to prevent clumping and caking, helping them flow freely. It is commonly found in products like spice mixes, powdered drink mixes, and grated cheeses.

Health notes

Silicon dioxide is generally recognized as safe (GRAS) by the FDA for use as an anti-caking agent. It is poorly absorbed by the body and passes through the digestive system. International bodies like JECFA have evaluated silicon dioxide and established acceptable daily intake levels.

Allergen info

Silicon dioxide is not one of the 9 FDA major allergens and does not contain gluten.

Products containing Silicon Dioxide To Reduce Caking

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Delicious Gourmet Popcorn, Cheddar & Sour Cream LIVE LOVE POP Delicious Gourmet Popcorn, Cheddar & Sour Cream Popcorn, Peanuts, Seeds & Related Snacks 500kcal 7.1Protein 25Fat 57.1Carbs Hodgson Mill Inc Sorghum Quinoa & Brown Rice Flavored Rice Dishes 357kcal 9.5Protein 3.6Fat 73.8Carbs Hodgson Mill Inc Sorghum Quinoa & Brown Rice, Pesto Herb Flavored Rice Dishes 357kcal 9.5Protein 3.6Fat 73.8Carbs Hodgson Mill Inc Gluten Free Sorghum, Quinoa & Brown Rice, Chipotle Flavored Rice Dishes 357kcal 9.5Protein 3.6Fat 73.8Carbs Brandable Inc Cheesy Bacon Biscuit Mix, Cheesy Bacon Bread & Muffin Mixes High in sodium — 23% DV per serving 375kcal 6.2Protein 10.9Fat 65.6Carbs The Clorox Company Kc Masterpiece, Barbecue Seasoning Seasoning Mixes, Salts, Marinades & Tenderizers 0kcal 0Protein 0Fat 0Carbs Quality Pasta Company Shells & Cheese Pasta Dinners High in sodium — 43% DV per serving 333kcal 9.8Protein 9.8Fat 52.0Carbs Quality Pasta Company Shells & Cheese Pasta Dinners High in sodium — 32% DV per serving 338kcal 10.3Protein 11.8Fat 48.5Carbs Bektrom Foods, Inc Dill Potato Salad, Dill Vegetable and Lentil Mixes High in sodium — 24% DV per serving 364kcal 6.1Protein 0Fat 81.8Carbs Bektrom Foods, Inc American Style Potato Salad, American Style Vegetable and Lentil Mixes 364kcal 6.1Protein 0Fat 84.8Carbs Bektrom Foods, Inc Macaroni & Cheese Pasta Dinners High in sodium — 25% DV per serving 362kcal 10.1Protein 2.2Fat 71.0Carbs Organic Italian Style Bread Crumbs, Italian Style Glencourt Inc. Organic Italian Style Bread Crumbs, Italian Style Bread & Muffin Mixes High in sodium — 20% DV per serving 393kcal 10.7Protein 3.6Fat 85.7Carbs
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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.