Ion-exchange resins
Ion-exchange resinsIon-exchange resins strip unwanted ions out of liquids — softening water, demineralising whey, decolourising sugar liquor. They are beds the liquid passes through, not ingredients.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| United States | Permitted, with conditions | 21 CFR 173.25retrieved 2026-09-07 | |
| Codex Alimentarius | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. |
What it is made from
Synthetic polymer beads, usually styrene-divinylbenzene, carrying acid or base groups. They are regenerated and reused rather than consumed.
- Vegan
- Vegetarian
Every name it appears under
1 recorded name. A label may use any of them.
As it appears in regulation
- Ion-exchange resins
Hazard reference values
No reference value for this substance in the sources we hold.
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.
Sources for this page
- ecfr retrieved 2026-09-07
Full licence terms and publisher details on Sources. How this page is built and updated: Method.
Machine-readable:/api/v1/additives/ion-exchange-resins.json