E509
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What it is
Calcium chloride is a salt that occurs naturally as the mineral Bischofite. It can also be produced industrially from limestone and salt (sodium chloride). It is a white crystalline solid that dissolves easily in water.
Why it's used
Calcium chloride is often used as a firming agent in canned fruits and vegetables, helping them maintain their texture. It is also used to enhance flavor, especially in pickles and olives, and can act as an electrolyte in sports drinks.
Health notes
In the US, calcium chloride is generally recognized as safe (GRAS) by the FDA for use in food. It is a source of calcium, an essential nutrient. International bodies like JECFA and EFSA have evaluated calcium chloride. At typical food intake levels, it is not associated with adverse health effects.
Allergen info
Calcium chloride is not one of the nine major allergens recognized by the FDA. It does not contain gluten.