Last reviewed May 2026 · 1 min read
Is Ammonium Alginate vegan?
Also known as: E403
E-number: E403
Vegan
Suitable for a vegan diet.
Yes — It is extracted from the cell walls of brown seaweed and processed with ammonia.
01 · The basics
What is Ammonium Alginate?
An ammonium salt of alginic acid used as a thickening and stabilizing agent.
02 · The source
Where it comes from
It is extracted from the cell walls of brown seaweed and processed with ammonia. It is completely vegan.
03 · Alternatives
Best vegan alternatives
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Frequently asked
FAQ
Is E403 vegan?
Yes, it is derived from marine seaweed.
Commonly found in
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