Calcium Carbonate
Anti-caking Agent
Calcium Carbonate at a glance
- Category
- Anti-caking Agent
- Also called
- E170, Chalk, 170
- Commonly found in
- Baking powder, Fortified plant-based milks, Calcium supplements, Tofu
- Diets reviewed
- 26 diets
What is Calcium Carbonate?
Calcium carbonate is a chemical compound with the formula CaCO3, commonly derived from natural sources such as chalk, limestone, and marble. It is widely used in the food industry for various purposes, including as an anti-caking agent, acidity regulator, or to fortify foods with calcium. While it can be sourced from non-animal materials, it may also be derived from egg shells or animal bones. Therefore, individuals following a strict vegan diet should verify the source to ensure it aligns with their dietary preferences.
Also known as:
Diet Compatibility
Calcium carbonate (also called e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.
Learn more →Calcium carbonate (e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.
Learn more →Calcium carbonate (e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.
Learn more →Calcium carbonate (also called e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.
Learn more →This ingredient is generally considered compatible with a Barley Free diet.
Learn more →This ingredient is generally considered compatible with a Corn Free diet.
Learn more →This ingredient is generally considered compatible with a Dairy Free diet.
Learn more →This ingredient is generally considered compatible with a Egg Free diet.
Learn more →This ingredient is generally considered compatible with a Fish Free diet.
Learn more →This ingredient is generally considered compatible with a Garlic Free diet.
Learn more →This ingredient is generally considered compatible with a Gerd diet.
Learn more →This ingredient is generally considered compatible with a Gluten Free diet.
Learn more →This ingredient is generally considered compatible with a Lactose Free diet.
Learn more →This ingredient is generally considered compatible with a Fodmap diet.
Learn more →This ingredient is generally considered compatible with a Lupin Free diet.
Learn more →This ingredient is generally considered compatible with a Milk Free diet.
Learn more →This ingredient is generally considered compatible with a Nightshades diet.
Learn more →This ingredient is generally considered compatible with a Oat Free diet.
Learn more →This ingredient is generally considered compatible with a Onion Free diet.
Learn more →This ingredient is generally considered compatible with a Peanut Free diet.
Learn more →This ingredient is generally considered compatible with a Rye Free diet.
Learn more →This ingredient is generally considered compatible with a Sesame Free diet.
Learn more →This ingredient is generally considered compatible with a Shell Fish Free diet.
Learn more →This ingredient is generally considered compatible with a Soy Free diet.
Learn more →This ingredient is generally considered compatible with a Tree Nut Free diet.
Learn more →This ingredient is generally considered compatible with a Wheat Free diet.
Learn more →Compatibility ratings are general guidelines and may vary by individual. Always consult a healthcare professional for personalized dietary advice.
Why People Avoid Calcium Carbonate
People may avoid calcium carbonate for dietary restrictions, particularly vegans, due to its potential animal origin. Although it is often derived from mineral sources like chalk or limestone, it can also be sourced from animal bones or egg shells. Without clear labeling, it is difficult to determine the specific source, so individuals who strictly adhere to a vegan diet or have ethical concerns about animal-derived products may choose to avoid it or contact manufacturers for clarification.
Potential Reactions
- Constipation
- Bloating
- Gas
This information is for educational purposes only and should not be considered medical advice. Individual reactions can vary. Consult a healthcare professional if you have concerns about specific ingredients.
Foods That Commonly Contain Calcium Carbonate
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Frequently Asked Questions
How Spoonful reviews ingredients
- Evidence-based. Diet compatibility ratings are compiled from peer-reviewed nutrition guidance, dietary association recommendations, and ingredient composition data.
- Continuously updated. Our ingredient database is refreshed as new sources and product data become available.
- Transparent uncertainty. When an ingredient's safety depends on serving size, preparation, or sub-ingredients, we mark it “caution” rather than forcing a binary answer.
- Not medical advice. Ratings are general guidance. Always consult a registered dietitian for personalized recommendations.
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