Calcium Acetate is in use as a thickening agent for foods. It acts as a preservative and as a buffer for pH in some processes. Is used as a thickening agent for cake batters, puddings, and pie fillings. As a buffer in controlling the pH of food during various stages of processing, as well as the finished product. Food Grade Calcium Acetate serves as a preservative to prevent microbial growth. It is also used as a calcium supplement in products for pets.