Additive · Antioxidant

E224 — Potassium metabisulphite

E224 (Potassium metabisulphite) appears in the ingredient lists of 14 products sold in Australia. Function: antioxidant, preservative.

14products with a complete record
22%rated A or B on Nutri-Score
2.0 gsugars per 100 g (median)
1.2 gsalt per 100 g (median)

Nutri-Score

How rated products spread
A 0%B 22%C 44%D 11%E 22%

9 rated products

Median values

Per 100 g, across all 14 products
Energy155 kcal
Sugars2.0 g
Saturates1.2 g
Salt1.2 g

Status in the United States (FDA)

Listed in the FDA inventory “Substances Added to Food”, with the regulations 21 CFR 182.3637.

Technical effects listed by the FDA: antimicrobial agent, antioxidant, color or coloring adjunct, dough strengthener, flour treating agent, oxidizing or reducing 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 16731-55-8 via Wikidata (CC0)

Products containing it, by country

Products listing this additive in each country edition of Shelfpedia (Open Food Facts data)