{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/calcium-ascorbate",
  "slug": "calcium-ascorbate",
  "name": "Calcium ascorbate",
  "identifiers": {
    "e_number": "E302",
    "ins_number": "302",
    "cas_number": "5743-27-1",
    "inchikey": "BLORRZQTHNGFTI-ZZMNMWMASA-L",
    "pubchem_cid": 54740489
  },
  "functional_class": "Antioxidant",
  "summary": "Calcium ascorbate is a vitamin C salt used as an antioxidant, notably to stop cut apples and potatoes browning.",
  "derivation_summary": "Made by neutralising fermentation-derived ascorbic acid with a calcium base.",
  "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 182.3189",
            "url": "https://www.ecfr.gov/current/title-21/section-182.3189"
          },
          "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": 13,
      "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 302",
            "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": "04.1.1.3",
            "name": "Peeled or cut fresh fruit"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "2014",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 04.1.1.3",
            "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": "06.4.2",
            "name": "Dried pastas and noodles and like products"
          },
          "max_level": 200,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 256",
          "effective_from": "2014",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 06.4.2",
            "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": "08.1.2",
            "name": "Fresh meat, poultry and game, comminuted"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 281",
          "effective_from": "2014",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 08.1.2",
            "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": "09.1.2",
            "name": "Fresh molluscs, crustaceans, and echinoderms"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 390, XS312 & XS315",
          "effective_from": "2017",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 09.1.2",
            "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": "09.2.1",
            "name": "Frozen fish, fish fillets, and fish products, including molluscs, crustaceans, and echinoderms"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 308, 392, XS36, XS92, XS95, XS165, XS190, XS191, XS312 & XS315",
          "effective_from": "2017",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 09.2.1",
            "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": "09.2.2",
            "name": "Frozen battered fish, fish fillets and fish products, including molluscs, crustaceans, and echinoderms"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 139 & XS166",
          "effective_from": "2017",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 09.2.2",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "13.1.2",
            "name": "Follow-up formulae"
          },
          "max_level": 50,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 315, 317 & 551",
          "effective_from": "2026",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 13.1.2",
            "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": "13.2",
            "name": "Complementary foods for infants and young children"
          },
          "max_level": 200,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 317 & XS73",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 13.2",
            "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": "14.1.2.1",
            "name": "Fruit juice"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: XS356R",
          "effective_from": "2026",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 14.1.2.1",
            "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": "14.1.2.3",
            "name": "Concentrates for fruit juice"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 127",
          "effective_from": "2005",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 14.1.2.3",
            "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": "14.1.3.1",
            "name": "Fruit nectar"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "2005",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 14.1.3.1",
            "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": "14.1.3.3",
            "name": "Concentrates for fruit nectar"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 127",
          "effective_from": "2005",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 302, food category 14.1.3.3",
            "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": "5743-27-1",
      "type": "cas",
      "source": "openfoodtox"
    },
    {
      "name": "(R)-5-((S)-1,2-Dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one calcium salt (2:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ascorbic acid calcium",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ascorbic acid calcium salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "BLORRZQTHNGFTI-ZZMNMWMASA-L",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calci-C",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcium ascorbate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Calcium ascorbate (e 302)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcium ascorbate anhydrous",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcium ascorbate dihydrate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Calcium diascorbate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcium L-ascorbate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "calcium;(2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-oxo-2H-furan-4-olate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CCRIS 7671",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E 302",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Ester-C",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hemicalcium ascorbate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HSDB 255",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS NO.302",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS-302",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "L-Ascorbic acid, calcium salt (2:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "L-Ascorbic acid, calcium salt (2:1), dihydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Vitamin c (as calcium ascorbate)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E302",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "302",
      "type": "ins",
      "source": "gsfa"
    },
    {
      "name": "Calcium bis{(2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate}",
      "type": "iupac",
      "source": "pubchem"
    },
    {
      "name": "calcium;(2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-oxo-2H-furan-4-olate",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Calcium ascorbate",
      "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, \"Calcium ascorbate\", https://foodadditiveindex.com/additives/calcium-ascorbate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.444Z"
}