Silicon Dioxide To Prevent Caking

Silicon dioxide is a form of silica, which is a common compound found in nature, such as in sand and quartz. In food, it is manufactured synthetically to be a fine, white powder. It is produced by reacting sodium silicate with a mineral acid.

Manufacturers add silicon dioxide to powdered and granulated foods to prevent caking and clumping, helping them flow freely. It acts as an anti-caking agent, absorbing moisture and keeping particles separate. It is commonly found in seasoning mixes, powdered drink mixes, salt, sugar, and spices.

In the US, silicon dioxide is Generally Recognized As Safe (GRAS) by the FDA for use as an anti-caking agent. International bodies like JECFA and EFSA have also evaluated silicon dioxide and have not set a numerical limit for its acceptable daily intake. It is not known to be absorbed by the body and is considered safe at typical levels found in food.