{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/ferric-pyrophosphate",
  "slug": "ferric-pyrophosphate",
  "name": "Ferric pyrophosphate",
  "identifiers": {
    "e_number": null,
    "ins_number": null,
    "cas_number": "10058-44-3",
    "inchikey": "CADNYOZXMIKYPR-UHFFFAOYSA-B",
    "pubchem_cid": 24877
  },
  "functional_class": null,
  "summary": "Ferric pyrophosphate is an iron fortificant used in cereals, flour and infant foods. It is chosen over more soluble iron salts because it causes less discolouration and off-flavour.",
  "derivation_summary": "Made by reacting an iron salt with pyrophosphate. Its low solubility is both the reason it does not spoil the food and the reason its absorption is lower than other iron salts.",
  "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 184.1304",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1304"
          },
          "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": "10058-44-3",
      "type": "cas",
      "source": "ecfr"
    },
    {
      "name": "10402-25-2",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "312619-28-6",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "Bestmade Natural Products Ferr Phos",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CCRIS 1900",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diphosphoric acid iron(III) salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diphosphoric acid, iron(3+) salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diphosphoric acid, iron(3+) salt (1:?)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diphosphoric acid, iron(3+) salt (3:4)",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Diphosphoric acid, iron(3++) salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferr Phos",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "ferric diphosphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferric pyrophosphate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "HSDB 454",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron (as pyrophosphate)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron pyrophosphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "iron(3+) diphosphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "iron(3+) diphosphate (4/3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(3+) diphosphate (4:3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(3+) pyrophosphate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "iron(3+);phosphonato phosphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) diphosphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) diphosphate (Fe4(P2O7)3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) pyrophosphate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Iron(III) pyrophosphate soluble crystals;Iron(III) pyrophosphate soluble crystals",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Iron(III) pyrophosphate, soluble crystals",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Pyrophosphoric acid, iron(3+) salt (3:4)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sunactive Fe",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "tetrairon tris(diphosphate)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tetrairon tris(pyrophosphate)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "tetrairon tris(pyrophosphate)",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Ferric pyrophosphate",
      "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 pyrophosphate\", https://foodadditiveindex.com/additives/ferric-pyrophosphate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.536Z"
}