Is E405 Vegan? Propylene Glycol Alginate
E405 (Propylene Glycol Alginate) is vegan. It is derived from seaweed, with no animal involvement in standard food production.
Why is E405 vegan?
The source of Propylene Glycol Alginate is seaweed, which is plant-derived, mineral or synthetic — all acceptable for vegans.
Is E405 vegetarian?
E405 is vegetarian.
What should vegans do about E405?
If you're avoiding Propylene Glycol Alginate, look for products without E405 in the ingredients list.
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Helpful for vegan label reading
Resources for vegans checking E-numbers like E405
Vegan Ingredient Guide
Spot hidden animal-derived E-numbers including E405 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.
E405 vegan FAQs
Is E405 vegan?
E405 is always vegan: seaweed.
Is E405 always non-vegan?
No — E405 is always vegan. It is derived from seaweed in all standard food uses.
How can I tell if E405 is vegan in a specific product?
You don't need to check for E405 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.