Potassium Aluminum Silicate
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What it is
Potassium aluminum silicate is a synthetic inorganic compound. It is made by combining potassium, aluminum, silicon, and oxygen in a specific ratio. It is often used as an anti-caking agent.
Why it's used
Manufacturers add potassium aluminum silicate to powdered foods to prevent clumping and ensure a free-flowing texture. It is commonly found in baking decorations, dessert toppings, and powdered mixes like cake or cookie mixes.
Health notes
Potassium aluminum silicate is listed by the FDA as Generally Recognized As Safe (GRAS) for use as an anti-caking agent. International bodies like JECFA have also evaluated it. At typical consumption levels found in food, it is not expected to pose health risks. Evidence does not suggest adverse health effects from its use as an additive.
Allergen info
Potassium aluminum silicate is not derived from any of the nine FDA major allergens. It does not contain gluten.