Last reviewed May 2026 · 1 min read
Is Sodium Sulfite vegan?
Also known as: E221
E-number: E221
Vegan
Suitable for a vegan diet.
Yes — Synthetic mineral salt.
01 · The basics
What is Sodium Sulfite?
A preservative and bleaching agent.
02 · The source
Where it comes from
Synthetic mineral salt. 100% vegan.
Frequently asked
FAQ
Is E221 vegan?
Yes.
Commonly found in
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