Also known as: E551, Silica, Anti-caking agent
| Source | Halal Ruling |
|---|---|
| Mineral | Halal — mineral compound (sand) |
Silicon dioxide is a mineral compound (essentially sand/silica) used as an anti-caking agent and carrier. It is always halal as it is entirely mineral-based with no animal connection.
Listed as 'silicon dioxide', 'E551', 'silica', or 'anti-caking agent (E551)'.