Is Sodium Alginate Banned? EU vs US Status, Risks & Where It Hides
TL;DR: Sodium Alginate is allowed in the EU but allowed in the US (thickener stabilizer).
Also called algin. (E401) CAS 9005-38-3.
Other names: E401, algin, INS 401
Is Sodium Alginate banned in the EU?
| EU status | Allowed |
|---|---|
| US status | Allowed |
| Risk level | low |
| Where it shows up | Various ice cream brands, Kraft Salad Dressing, Some dairy stabilizer blends, Molecular gastronomy kits, Certain yogurts |
| CAS number | 9005-38-3 |
What is Sodium Alginate?
Sodium alginate is the sodium salt of alginic acid, a natural polysaccharide extracted from brown seaweed (Ascophyllum nodosum, Macrocystis, Laminaria species). It forms gels instantly in the presence of calcium ions, enabling molecular gastronomy techniques like spherification. It is widely used as a thickener, stabilizer, and gelling agent.
Why is Sodium Alginate used in food?
Thickens and stabilizes ice cream, salad dressings, and dairy; enables spherification in molecular gastronomy; also used in wound dressings and dental impressions.
Is Sodium Alginate dangerous? Documented risks
Considered safe. No significant adverse effects at food use levels. Functions as a soluble dietary fiber with possible cholesterol-lowering and glucose-moderating effects documented in clinical studies. EFSA confirmed safety with no ADI needed for typical food additive uses.
Common US products containing Sodium Alginate
How to avoid Sodium Alginate: safer alternatives
Carrageenan, xanthan gum, or guar gum for thickening. Agar-agar for heat-stable gelling.
Frequently asked questions about Sodium Alginate
Is sodium alginate vegan?
Yes — derived from seaweed.
What is spherification?
A molecular gastronomy technique using sodium alginate + calcium chloride to form liquid-filled gel spheres resembling caviar or bubbles.
Is sodium alginate safe?
Yes — approved globally and functions as a beneficial dietary fiber.
Is sodium alginate banned anywhere?
No. Permitted in EU (E401), US, and globally.
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Sources
- FDA 21 CFR 184.1724 — Sodium alginate — FDA
- EFSA re-evaluation of alginic acid (E 400), sodium alginate (E 401) as food additives — EFSA
Our scores are never influenced by brands. Last updated 6/11/2026.