Silicon Dioxide

Silicon dioxide is a chemical compound made from silicon and oxygen, commonly found in nature as quartz or sand. For use in food, it is typically manufactured as a very fine, white, odorless powder. It is a synthetic form of a naturally occurring mineral.

Manufacturers add silicon dioxide primarily as an anti-caking agent to prevent powdered ingredients from clumping together. This function helps products like spices, powdered drink mixes, and dry soup mixes remain free-flowing and easy to dispense. It also acts as a carrier for flavors and fragrances.

The U.S. Food and Drug Administration (FDA) considers silicon dioxide to be Generally Recognized As Safe (GRAS) for use as an anti-caking agent in food. At typical intake levels from food, it is largely unabsorbed by the body and is excreted. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated silicon dioxide and did not set a numeric acceptable daily intake (ADI not specified), concluding that its use as a food additive is safe. The European Food Safety Authority (EFSA) has also assessed its safety and found no health concerns at authorized use levels.