Last reviewed May 2026 · 1 min read
Is Potassium Metabisulfite vegan?
Also known as: E224, Potassium pyrosulfite
E-number: E224
Vegan
Suitable for a vegan diet.
Yes — It is a mineral-based synthetic product.
01 · The basics
What is Potassium Metabisulfite?
A chemical compound used primarily in winemaking and beer brewing to inhibit the growth of wild yeast and bacteria.
02 · The source
Where it comes from
It is a mineral-based synthetic product. No animal derivatives are used.
Frequently asked
FAQ
Is E224 vegan?
Yes, it is 100% vegan.
Why is it in my wine?
It acts as a preservative to prevent oxidation and to kill unwanted bacteria that could turn the wine into vinegar.
Commonly found in
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