Aluminum Potassium Sulfate

Aluminum potassium sulfate is a mineral salt that occurs naturally as the mineral kalinite. It is often produced industrially by combining aluminum sulfate and potassium sulfate. It appears as a white crystalline powder.

This ingredient is primarily used as a leavening agent in baked goods, helping them to rise and become fluffy. It can also act as an emulsifier, helping to blend ingredients that don't normally mix, like oil and water. It is found in cakes, cupcakes, snack cakes, and some prepared foods.

In the United States, aluminum potassium sulfate is generally recognized as safe (GRAS) by the FDA when used for its intended purpose. Regulatory bodies like JECFA and EFSA have evaluated aluminum compounds, but they have not set specific numeric limits for this particular salt. While aluminum is present in the environment and some foods, high levels of aluminum intake are a concern for some, though typical dietary exposure from food additives is considered low.