Last reviewed May 2026 · 1 min read
Is Calcium Carbonate vegan?
Also known as: Chalk, E170
E-number: E170
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Source can be plant or animal.
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It depends — Can be mined from limestone (vegan) or derived from crushed eggshells or oyster shells (non-vegan).
01 · The basics
What is Calcium Carbonate?
A common white mineral used as a food colorant and calcium supplement.
02 · The source
Where it comes from
Can be mined from limestone (vegan) or derived from crushed eggshells or oyster shells (non-vegan).
03 · Alternatives
Best vegan alternatives
Mined chalk
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Frequently asked
FAQ
Is calcium carbonate vegan?
Usually yes (mined), but verify source for shell-derived versions.
Commonly found in
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Other coloring / supplement ingredients
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Related ingredients
E422 (Glycerol / Glycerin)
A sweet, syrupy liquid used as a humectant in foods and cosmetics.
E920 (L-Cysteine)
A dough conditioner used in commercial bread baking.
Calcium Carbonate
A common mineral used as a white food coloring, an anti-caking agent, and a calcium supplement.
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