Last reviewed May 2026 · 1 min read
Is Calcium Sulfate vegan?
Also known as: Gypsum, E516
E-number: E516
Vegan
Suitable for a vegan diet.
Yes — Mined from gypsum or produced synthetically.
01 · The basics
What is Calcium Sulfate?
A naturally occurring mineral used as a firming agent and tofu coagulant.
02 · The source
Where it comes from
Mined from gypsum or produced synthetically. 100% vegan.
Frequently asked
FAQ
Is E516 vegan?
Yes, it is a mineral-based product.
Commonly found in
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Other processing aid / firming agent ingredients
Calcium Chloride
A mineral salt used as a firming agent in canned vegetables and to balance minerals in brewing.
Magnesium Chloride
A mineral salt used as a firming agent and the primary coagulant in traditional tofu (nigari).
Magnesium Chloride
A mineral salt used as a firming agent and a primary coagulant in tofu production.
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