Ingredient · E516

Calcium Sulfate Dihydrate

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add calcium sulfate dihydrate as a firming agent, dough conditioner, and source of …

What it is

Calcium sulfate dihydrate is a mineral compound that occurs naturally as the mineral gypsum. It is also produced industrially by reacting calcium carbonate with sulfuric acid. It is a white powder that is insoluble in water.

Why it's used

Manufacturers add calcium sulfate dihydrate as a firming agent, dough conditioner, and source of calcium. It helps maintain the texture and shape of foods, especially in canned fruits and vegetables, and can improve the texture of baked goods. It is commonly found in baked goods like croissants and muffins, as well as crackers and snack bars.

Health notes

Calcium sulfate 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 sulfate, and it is permitted for use in many countries. No significant health concerns are associated with typical dietary intake.

Allergen info

Calcium sulfate dihydrate is not derived from any of the major allergens and does not contain gluten.

Products containing Calcium Sulfate Dihydrate

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.