Is E551 Vegan? Silicon Dioxide
E551 (Silicon Dioxide) is vegan. It is derived from mineral, with no animal involvement in standard food production.
Why is E551 vegan?
The source of Silicon Dioxide is mineral, which is plant-derived, mineral or synthetic — all acceptable for vegans.
Is E551 vegetarian?
E551 is vegetarian.
What should vegans do about E551?
If you're avoiding Silicon Dioxide, look for products without E551 in the ingredients list.
Affiliate links — we may earn a commission at no extra cost to you.
Helpful for vegan label reading
Resources for vegans checking E-numbers like E551
Vegan Ingredient Guide
Spot hidden animal-derived E-numbers including E551 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.
E551 vegan FAQs
Is E551 vegan?
E551 is always vegan: mineral.
Is E551 always non-vegan?
No — E551 is always vegan. It is derived from mineral in all standard food uses.
How can I tell if E551 is vegan in a specific product?
You don't need to check for E551 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.