E252 — Potassium nitrate · page 3
E252 (Potassium nitrate) appears in the ingredient lists of 467 products sold in the United Kingdom. Function: preservative.
Nutri-Score
400 rated products
Median values
| Energy | 230 kcal |
| Sugars | 0.90 g |
| Saturates | 4.2 g |
| Salt | 2.2 g |
Categories
- Bacon33
- Hams19
- Chorizos19
- Bacon rashers18
- White hams15
- Pizzas13
- Salami11
- Back bacon11
Status in the United States (FDA)
Listed in the FDA inventory “Substances Added to Food”, with the regulations 21 CFR 172.160.
Technical effects listed by the FDA: antimicrobial agent, color or coloring adjunct, flavor enhancer, flavoring agent or adjuvant
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 7757-79-1 via Wikidata (CC0)
Products
467 products, most viewed first · page 3 of 10.
Source: Open Food Facts export of 1 November 2026, ODbL · Shelfpedia calculations (medians, distributions).