{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/potassium-sulfate",
  "slug": "potassium-sulfate",
  "name": "Potassium sulfate",
  "identifiers": {
    "e_number": null,
    "ins_number": "515(i)",
    "cas_number": "7778-80-5",
    "inchikey": "OTYBMLCTZGSZBG-UHFFFAOYSA-L",
    "pubchem_cid": 24507
  },
  "functional_class": "Acidity regulator",
  "summary": "Potassium sulfate is an acidity regulator and a component of some salt substitutes and mineral waters.",
  "derivation_summary": "Mined or produced by reacting potassium chloride with 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 184.1643",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1643"
          },
          "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": 2,
      "provisions": [
        {
          "status": "permitted",
          "food_category": null,
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "1999",
          "citation": {
            "ref": "CXS 192-1995 Table Three, INS 515(i)",
            "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": "01.2.1.2",
            "name": "Fermented milks (plain), heat-treated after fermentation"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 630",
          "effective_from": "2024",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 515(i), food category 01.2.1.2",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        }
      ]
    }
  ],
  "names": [
    {
      "name": "7778-80-5",
      "type": "cas",
      "source": "ecfr"
    },
    {
      "name": "Arcanum duplicatum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Bestmade Natural Products Kali Sulph",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "BLI-801 Component Potassium sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "BLI801 Component Potassium sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Caswell No. 702",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dipotassium sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "EPA Pesticide Chemical Code 005603",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HSDB 5047",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS NO.515(I)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS-515(I)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "KALI SULPH",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kali Sulph 12X",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kali Sulph 200X",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kali Sulph 3X",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kali Sulph 6X",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kali sulphuricum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "KALI SULPHURICUM 6X",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kali Sulphuricum 8007",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "KALIUM SULFURICUM 6X",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kalium sulphuricum",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kaliumsulfat",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Pot sulf",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium (as sulfate)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium in Potassium SuIfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM SULFATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate (2:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate (JP17/USAN)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate (K2(SO4))",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate (K2SO4)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate - $-beta",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate, 99.997% (metals basis)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "POTASSIUM SULFATE, ACS",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate, Biochemical grade",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulfate, Trace metals grade 99.95%",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassium sulphate, containing in the dry state more than 52 per cent by weight of K2O",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Potassiumsulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Reagecon Potassium Sulfate Solution SO4 100 microg/mL according to Chinese Pharmacopoeia (ChP) Limit Tests",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Rxhomeo Homeopathic Combo 20",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Rxhomeo Homeopathic Combo 3",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfato de potasio",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid dipotassium salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid potassium salt (1:2)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid, potassium salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid, potassium salt (1:?)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulphuric acid, potassium salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "SUPREP BOWEL PREP KIT COMPONENT POTASSIUM SULFATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tartarus vitriolatus",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "TONICPET 7",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "USP Solution Potassium Sulfate TS Conforms to USP",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "515(i)",
      "type": "ins",
      "source": "gsfa"
    },
    {
      "name": "Potassium 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"
    },
    {
      "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, \"Potassium sulfate\", https://foodadditiveindex.com/additives/potassium-sulfate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.661Z"
}