{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/yellow-prussiate-of-soda",
  "slug": "yellow-prussiate-of-soda",
  "name": "Yellow prussiate of soda",
  "identifiers": {
    "e_number": "E535",
    "ins_number": "535",
    "cas_number": "13601-19-9",
    "inchikey": "GTSHREYGKSITGK-UHFFFAOYSA-N",
    "pubchem_cid": 26129
  },
  "functional_class": "Anticaking agent",
  "summary": "Sodium ferrocyanide is the anticaking agent in most table salt. As with the potassium form, the cyanide is bound to iron in a stable complex rather than present as free cyanide.",
  "derivation_summary": "Manufactured from hydrogen cyanide, iron salts and sodium hydroxide. Its traditional name comes from Prussian blue, the pigment made from the same iron-cyanide chemistry.",
  "regulatory_status": [
    {
      "jurisdiction": "US",
      "jurisdiction_name": "United States",
      "authority": "Food and Drug Administration",
      "status": "permitted_with_conditions",
      "status_label": "Permitted, with conditions",
      "provision_count": 1,
      "provisions": [
        {
          "status": "permitted_with_conditions",
          "food_category": null,
          "max_level": null,
          "max_level_unit": null,
          "conditions": null,
          "effective_from": null,
          "citation": {
            "ref": "21 CFR 172.490",
            "url": "https://www.ecfr.gov/current/title-21/section-172.490"
          },
          "source": "ecfr",
          "retrieved_at": "2026-09-07T18:25:51.549Z"
        }
      ]
    },
    {
      "jurisdiction": "CODEX",
      "jurisdiction_name": "Codex Alimentarius",
      "authority": "Codex Alimentarius Commission / JECFA",
      "status": "permitted_with_conditions",
      "status_label": "Permitted, with conditions",
      "provision_count": 3,
      "provisions": [
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "12.1.1",
            "name": "Salt"
          },
          "max_level": 14,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 24 & 107",
          "effective_from": "2006",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 535, food category 12.1.1",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "12.1.2",
            "name": "Salt substitutes"
          },
          "max_level": 20,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 24",
          "effective_from": "1999",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 535, food category 12.1.2",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "12.2.2",
            "name": "Seasonings and condiments"
          },
          "max_level": 20,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 24",
          "effective_from": "1999",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 535, food category 12.2.2",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        }
      ]
    }
  ],
  "names": [
    {
      "name": "13601-19-9",
      "type": "cas",
      "source": "openfoodtox"
    },
    {
      "name": "5HT6X21AID",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "ADDITION AGENT 55",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E 535",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Ferrate(4), hexacyano, tetrasodium",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4), hexakis(cyanoC), tetrasodium, (OC611)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexacyano-, tetrasodium",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexakis(cyano-.kappa.C)-, sodium (1:4), (OC-6-11)-",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexakis(cyano-.kappa.C)-, tetrasodium, (OC-6-11)-",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexakis(cyano-C)-, tetrasodium",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexakis(cyano-C)-, tetrasodium, (OC-6-11)-",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexakis(cyano-kappaC)-, sodium (1:4), (OC-6-11)-",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ferrate(4-), hexakis(cyano-kappaC)-, tetrasodium, (OC-6-11)-",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "FERROCYANIDES",
      "type": "common",
      "source": "gsfa"
    },
    {
      "name": "HEXACYANOFERRATE OF SODIUM",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HSDB 742",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS NO.535",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS-535",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "lambda2-iron(2+) ion tetrasodium hexakis(iminomethanide)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Natriumhexazyanoferrat(II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium ferrocyanide",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Sodium ferrocyanide (Na4(Fe(CN)6))",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium ferrocyanide, AldrichCPR",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "sodium hexacyanidoferrate(4-)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "sodium hexacyanidoferrate(II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium hexacyanoferate(II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium hexacyanoferrate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "sodium hexacyanoferrate(4-)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium hexacyanoferrate(II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium hexacyanoferrate(II) decahydrate, 99%",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sodium prussiate yellow",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tetrasodium ferrocyanide",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "tetrasodium hexacyanidoferrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tetrasodium hexacyanoferrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tetrasodium hexacyanoferrate(4)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tetrasodium hexacyanoferrate(4-)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "tetrasodium hexakis(cyanido-kappaC)ferrate(4-)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "tetrasodium;iron(2+);hexacyanide",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Yellow prussiate of soda",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Yellow prussiate of sodaSodium hexacyanoferrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E535",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "535",
      "type": "ins",
      "source": "gsfa"
    },
    {
      "name": "tetrasodium;iron(2+);hexacyanide",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Yellow prussiate of soda",
      "type": "label",
      "source": "ecfr"
    }
  ],
  "hazard_reference_values": [
    {
      "type": "ADI",
      "value": 0.03,
      "value_text": null,
      "unit": "mg/kg bw/day",
      "population": "consumers",
      "assessing_body": "EFSA ANS",
      "year": 2018,
      "opinion": {
        "ref": "doi:10.2903/j.efsa.2018.5374",
        "url": "https://doi.org/10.2903/j.efsa.2018.5374"
      }
    }
  ],
  "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"
    },
    {
      "key": "gsfa",
      "name": "Codex General Standard for Food Additives (CXS 192-1995)",
      "publisher": "Codex Alimentarius Commission (FAO/WHO)",
      "licence": "FAO terms — non-commercial use with attribution",
      "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/",
      "retrieved_at": "2026-09-07T07:54:15.059Z"
    }
  ],
  "citation_policy": "Cite as: Food Additive Index, \"Yellow prussiate of soda\", https://foodadditiveindex.com/additives/yellow-prussiate-of-soda. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.778Z"
}