{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/aluminum-sulfate",
  "slug": "aluminum-sulfate",
  "name": "Aluminum sulfate",
  "identifiers": {
    "e_number": "E520",
    "ins_number": null,
    "cas_number": "10043-01-3",
    "inchikey": "DIZPMCHEQGEION-UHFFFAOYSA-H",
    "pubchem_cid": 24850
  },
  "functional_class": null,
  "summary": "Aluminium sulfate is a firming agent used in pickles and some canned vegetables, and a clarifying agent. It is one of the additives contributing dietary aluminium.",
  "derivation_summary": "Produced by dissolving bauxite or aluminium hydroxide in sulfuric acid.",
  "regulatory_status": [
    {
      "jurisdiction": "US",
      "jurisdiction_name": "United States",
      "authority": "Food and Drug Administration",
      "status": "permitted",
      "status_label": "Permitted",
      "provision_count": 1,
      "provisions": [
        {
          "status": "permitted",
          "food_category": null,
          "max_level": null,
          "max_level_unit": null,
          "conditions": null,
          "effective_from": null,
          "citation": {
            "ref": "21 CFR 182.1125",
            "url": "https://www.ecfr.gov/current/title-21/section-182.1125"
          },
          "source": "ecfr",
          "retrieved_at": "2026-09-07T18:25:51.549Z"
        }
      ]
    },
    {
      "jurisdiction": "CODEX",
      "jurisdiction_name": "Codex Alimentarius",
      "authority": "Codex Alimentarius Commission / JECFA",
      "status": "not_listed",
      "status_label": "Not listed",
      "note": "Does not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.",
      "provision_count": 0,
      "provisions": []
    }
  ],
  "names": [
    {
      "name": "10043-01-3",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "10124-29-5",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "Alum",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "ALUM CAKE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminii sulfas",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminii sulfas, hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "aluminium potassium sulfate 12-hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "aluminium potassium sulfate hydrate (1:1:2:12)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminium sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminium sulfate (2:3) hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "aluminium sulfate anhydrous",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminium sulfate, hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminium sulphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminium Sulphuricum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum alum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum alum (VAN)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sesquisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "ALUMINUM SULFATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulfate (2:3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum Sulfate (2:3) Hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulfate (3:2)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulfate (Al2(SO4)3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulfate anhydrous",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum Sulphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulphate (2:3) hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulphate anhydrous",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum sulphate hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum trisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aluminum(III) silfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "aluminum(III) sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cake alum (VAN)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "dialuminium trisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "DIALUMINIUM(3+) ION TRISULFATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dialuminum sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dialuminum sulphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dialuminum trisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dialuminum Trisulfate Hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E 520",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "FERTOSAN",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Filter Alum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Gingi-Aid MAX Z-Twist 00",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Gingi-Aid MAX Z-Twist 1",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Gingi-Aid MAX Z-Twist 2",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Gingi-Aid MAX Z-Twist 3",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hi Soft C 2",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HIS Styptic Pencil",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS NO.520",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS-520",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Nalco 7530",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "NICK RELIEF",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Papermaker's Alum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Pearl Alum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Pickle Alum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Shaving Factory",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Shaving Factory Disposable Styptic Pencil",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfatodialuminum disulfate (Al2(SO4)3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "SULFURIC ACID, ALUMINIUM SALT",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid, aluminum salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid, aluminum salt (3:2)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid, aluminum(3+) salt (3:2)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tai-Ace S 150",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Trim Men Styptic Pencil",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E520",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "Dialuminum trisulfate",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Aluminum sulfate",
      "type": "label",
      "source": "ecfr"
    }
  ],
  "hazard_reference_values": [],
  "sources": [
    {
      "key": "ecfr",
      "name": "Electronic Code of Federal Regulations, Title 21",
      "publisher": "U.S. Government Publishing Office / National Archives",
      "licence": "Public domain",
      "url": "https://www.ecfr.gov/api/versioner/v1/full/2026-08-31/title-21.xml",
      "retrieved_at": "2026-09-07T18:25:51.549Z"
    }
  ],
  "citation_policy": "Cite as: Food Additive Index, \"Aluminum sulfate\", https://foodadditiveindex.com/additives/aluminum-sulfate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.406Z"
}