{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/potassium-bisulfite",
  "slug": "potassium-bisulfite",
  "name": "Potassium bisulfite",
  "identifiers": {
    "e_number": "E228",
    "ins_number": null,
    "cas_number": "7773-03-7",
    "inchikey": "DJEHXEMURTVAOE-UHFFFAOYSA-M",
    "pubchem_cid": 23663620
  },
  "functional_class": null,
  "summary": "Potassium bisulfite is a preservative and antioxidant used in wine, dried fruit and juices. Sulphites must be declared above ten parts per million because they trigger reactions in some asthmatics.",
  "derivation_summary": "Produced by reacting sulfur dioxide with potassium carbonate. It is preferred to the sodium form in wine, where added sodium is unwanted.",
  "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 182.3616",
            "url": "https://www.ecfr.gov/current/title-21/section-182.3616"
          },
          "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": "4429-42-9",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "7773-03-7",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "E 228",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "HSDB 1263",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS NO.228",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS-228",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kaliumbisulfit",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Monopotassium sulfite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium acid sulfite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM BISULFITE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM BISULFITE (II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM BISULFITE (MART.)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM BISULFITE SOLUTION",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM BISULPHITE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM BISULPHITE SOLUTION",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium hydrogen sulfite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium hydrogen sulphite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "potassium hydrogensulfite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfite (KHSO3)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfite, hydrogen",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "QJK5LO891P",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfite, potassium metabi-",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfurous acid, monopotassium salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfurous acid, potassium salt (1:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E228",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "Potassium hydrogen sulfite",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Potassium bisulfite",
      "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, \"Potassium bisulfite\", https://foodadditiveindex.com/additives/potassium-bisulfite. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.643Z"
}