E520 — Aluminum sulfate

Status in the United States (FDA)

Listed in the FDA inventory “Substances Added to Food”, with the regulations 21 CFR 172.892, 182.1125.

Technical effects listed by the FDA: color or coloring adjunct, emulsifier or emulsifier salt, firming agent, ph control agent, processing aid, sequestrant

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 10043-01-3 via Wikidata (CC0)