Last reviewed May 2026 · 1 min read
Is Sodium Ferrocyanide vegan?
Also known as: E535, Yellow prussiate of soda
E-number: E535
Vegan
Suitable for a vegan diet.
Yes — It is produced synthetically in a lab.
01 · The basics
What is Sodium Ferrocyanide?
An anti-caking agent used to prevent salt from clumping together in humid environments.
02 · The source
Where it comes from
It is produced synthetically in a lab. Despite the name, it does not contain free cyanide and is not animal-derived.
03 · Alternatives
Best vegan alternatives
Calcium carbonate
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Frequently asked
FAQ
Is E535 (Sodium Ferrocyanide) vegan?
Yes, it is 100% synthetic.
Is it poisonous?
No. The cyanide is tightly bound to iron atoms, making it non-toxic in the small amounts used in food.
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