Is E402 Vegan? Potassium Alginate
E402 (Potassium Alginate) is vegan. It is derived from seaweed, with no animal involvement in standard food production.
Why is E402 vegan?
The source of Potassium Alginate is seaweed, which is plant-derived, mineral or synthetic — all acceptable for vegans.
Is E402 vegetarian?
E402 is vegetarian.
What should vegans do about E402?
If you're avoiding Potassium Alginate, look for products without E402 in the ingredients list.
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Helpful for vegan label reading
Resources for vegans checking E-numbers like E402
Vegan Ingredient Guide
Spot hidden animal-derived E-numbers including E402 on any food label.
Vegan Label Reading
Books and pocket cards that decode E-numbers and hidden animal additives in seconds.
Certified Vegan Foods
Products with vegan certification logos — no ingredient-by-ingredient guessing.
E402 vegan FAQs
Is E402 vegan?
E402 is always vegan: seaweed.
Is E402 always non-vegan?
No — E402 is always vegan. It is derived from seaweed in all standard food uses.
How can I tell if E402 is vegan in a specific product?
You don't need to check for E402 specifically — it is always vegan. Look for vegan certification logos if you want a full product-level guarantee.
Other additives to watch for vegans
Data: Open Food Facts (ODbL). Vegan status reflects the most common source — always verify with manufacturer or look for certified vegan labelling.