{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/ferric-sulfate",
  "slug": "ferric-sulfate",
  "name": "Ferric sulfate",
  "identifiers": {
    "e_number": null,
    "ins_number": null,
    "cas_number": "10028-22-5",
    "inchikey": "RUTXIHLAWFEWGM-UHFFFAOYSA-H",
    "pubchem_cid": 24826
  },
  "functional_class": null,
  "summary": "Ferric sulfate is an iron source and processing aid used in some fortified foods and in water treatment.",
  "derivation_summary": "Produced by oxidising ferrous sulfate or dissolving iron oxide 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 184.1307",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1307"
          },
          "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": "10028-22-5",
      "type": "cas",
      "source": "ecfr"
    },
    {
      "name": "142906-29-4",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "3HWS7HF5XD",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "4YKQ1X5E5Y",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CCRIS 7885",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Coquimbite mineral",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "diferric;trisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diiron tris(sulphate)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diiron trisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric persulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric sesquisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "FERRIC SULFATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric sulfate (USP)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "FERRIC SULFATE ANHYDROUS",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric sulphate hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric tersulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric trisulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HSDB 6311",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron persulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron sesquisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron sulfate (2:3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron sulfate (Fe2(SO4)3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron sulfate (fe2(so4)3) hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron tersulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(3+) sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(3+) sulfate (2/3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(3+) sulfate, (2:3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "iron(3+);trisulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) sulfate (Fe2(SO4)3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) sulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "iron(III) sulfate(VI)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "iron(III)sulphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Pix 115",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "STASIS",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid, iron(3+) salt (3:2)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Viscostat",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric 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, \"Ferric sulfate\", https://foodadditiveindex.com/additives/ferric-sulfate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.537Z"
}