Calcium Chloride Calcium Carbonate

Calcium chloride is a salt made from calcium and chlorine. It is often produced industrially from limestone or as a byproduct of the Solvay process for making sodium carbonate. Calcium carbonate is a naturally occurring mineral found in rocks like limestone and chalk, and it's also the main component of seashells and pearls.

Calcium chloride is used as a firming agent in canned fruits and vegetables, and to add a salty taste to foods. Calcium carbonate is used as a firming agent, a source of calcium, and to adjust acidity in foods like baked goods and dairy products. Both are common in processed foods.

Calcium chloride and calcium carbonate are both generally recognized as safe (GRAS) by the FDA. They are essential minerals for human health, playing roles in bone health and muscle function. JECFA and EFSA have evaluated both substances. High intake of calcium chloride could cause gastrointestinal upset, while excessive calcium carbonate can lead to constipation or interfere with nutrient absorption.