E221 — Sodium sulphite
E221 (Sodium sulphite) appears in the ingredient lists of 24 products sold in Ireland. Function: antioxidant, preservative.
Nutri-Score
18 rated products
Median values
| Energy | 246 kcal |
| Sugars | 1.7 g |
| Saturates | 5.7 g |
| Salt | 1.4 g |
Categories
Status in the United States (FDA)
Listed in the FDA inventory “Substances Added to Food”, with the regulations 21 CFR 73.85, 173.310, 182.3798.
Technical effects listed by the FDA: antioxidant, color or coloring adjunct, dough strengthener, flour treating agent, formulation aid, oxidizing or reducing agent, ph control agent
The inventory is a partial list, and a listing is not an FDA approval of every use; the regulations set the permitted uses.
U.S. Food and Drug Administration, Substances Added to Food (updated 9/8/2026), public domain · CAS 7757-83-7 via Wikidata (CC0)
Products containing it, by country
Products listing this additive in each country edition of Shelfpedia (Open Food Facts data)
| Country | Products |
|---|---|
| United States | 543 |
| Spain | 106 |
| France | 98 |
| United Kingdom | 73 |
| Ireland | 24 |
| Germany | 14 |
| Portugal | 11 |
| Australia | 10 |
| Mexico | 9 |
| Belgium | 9 |
Products
24 products, most viewed first.
Source: Open Food Facts export of 23 October 2026, ODbL · Shelfpedia calculations (medians, distributions).