{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/magnesium-carbonate",
  "slug": "magnesium-carbonate",
  "name": "Magnesium carbonate",
  "identifiers": {
    "e_number": "E504",
    "ins_number": "504(i)",
    "cas_number": "39409-82-0",
    "inchikey": "UOVKYUCEFPSRIJ-UHFFFAOYSA-D",
    "pubchem_cid": 73415762
  },
  "functional_class": "Acidity regulator",
  "summary": "Magnesium carbonate is an anticaking agent, acidity regulator and magnesium source, used in powdered foods, table salt and cocoa processing.",
  "derivation_summary": "Obtained by mining and refining magnesite, or precipitated from magnesium salt solutions.",
  "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 184.1425",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1425"
          },
          "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": 18,
      "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 504(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",
          "food_category": null,
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "1999",
          "citation": {
            "ref": "CXS 192-1995 Table Three, INS 504(ii)",
            "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": "01.1.3",
            "name": "Fluid Buttermilk (plain)"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 261",
          "effective_from": "2013",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 01.1.3",
            "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": "01.2.1.2",
            "name": "Fermented milks (plain), heat-treated after fermentation"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 631",
          "effective_from": "2024",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(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"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "01.5.1",
            "name": "Milk powder and cream powder (plain)"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 544, 549 & 550",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 01.5.1",
            "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": "01.8.2",
            "name": "Dried whey and whey products, excluding whey cheeses"
          },
          "max_level": 10000,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: XS331",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 01.8.2",
            "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": "04.2.2.7",
            "name": "Fermented vegetable (including mushrooms and fungi, roots and tubers, pulses and legumes, and aloe vera) and seaweed products, excluding fermented soybean products of food categories 06.8.6, 06.8.7, 12.9.1,"
          },
          "max_level": 5000,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 36 & XS294",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 04.2.2.7",
            "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": "06.2.1",
            "name": "Flours"
          },
          "max_level": 1500,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 170",
          "effective_from": "2025",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 06.2.1",
            "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: 16 & XS166",
          "effective_from": "2017",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), 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": "09.2.3",
            "name": "Frozen minced and creamed fish products, including molluscs, crustaceans, and echinoderms"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 16",
          "effective_from": "2013",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 09.2.3",
            "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": "09.2.4",
            "name": "Cooked and/or fried fish and fish products, including molluscs, crustaceans, and echinoderms"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "2013",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 09.2.4",
            "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": "09.2.5",
            "name": "Smoked, dried, fermented, and/or salted fish and fish products, including molluscs, crustaceans, and echinoderms"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: XS167, XS189, XS222, XS236, XS244 & XS311",
          "effective_from": "2018",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 09.2.5",
            "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": "11.1.2",
            "name": "Powdered sugar, powdered dextrose"
          },
          "max_level": 15000,
          "max_level_unit": "mg/kg",
          "conditions": "GSFA notes: 56, 465",
          "effective_from": "2019",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 11.1.2",
            "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": "11.4",
            "name": "Other sugars and syrups (e.g. xylose, maple syrup, sugar toppings)"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 258",
          "effective_from": "2013",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 11.4",
            "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": "12.1.1",
            "name": "Salt"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "2006",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), 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": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "2013",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), 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": "12.2.1",
            "name": "Herbs and spices"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 534, XS326 & XS351",
          "effective_from": "2025",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 12.2.1",
            "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": "14.1.5",
            "name": "Coffee, coffee substitutes, tea, herbal infusions, and other hot cereal and grain beverages, excluding cocoa"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 160",
          "effective_from": "2013",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 504(i), food category 14.1.5",
            "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": "12125-28-9",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "39409-82-0",
      "type": "cas",
      "source": "ecfr"
    },
    {
      "name": "546-93-0",
      "type": "cas",
      "source": "openfoodtox"
    },
    {
      "name": "Basic magnesium carbonate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CARBONIC ACID, MAGNESIUM SALT (1:1), MIXT. WITH MAGNESIUM HYDROXIDE, HYDRATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CCRIS 7884",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E 504(i)",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "HYDRATED BASIC MAGNESIUM CARBONATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HYDRATED BASIC MAGNESIUM CARBONATE (MART.)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hydromagnesite",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "INS NO.504(II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "INS-504(II)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kinsei",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Magnesium carbonate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Magnesium carbonate basic",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "MAGNESIUM CARBONATE HYDROXIDE [MI]",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Magnesium hydrogen carbonateMagnesium subcarbonate (light or heavy)Hydrated basic magnesium carbonateMagnesium carbonate hydroxide",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Magnesium hydroxide carbonate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "MAGNESIUM SUBCARBONATE (LIGHT OR HEAVY)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Marinco C",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "YQO029V1L4",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E504",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "504(i)",
      "type": "ins",
      "source": "gsfa"
    },
    {
      "name": "504(ii)",
      "type": "ins",
      "source": "gsfa"
    },
    {
      "name": "Carbonic acid, magnesium salt (1:1), mixt. with magnesium hydroxide (mg(oh)2), hydrate",
      "type": "iupac",
      "source": "pubchem"
    },
    {
      "name": "Magnesium carbonate",
      "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, \"Magnesium carbonate\", https://foodadditiveindex.com/additives/magnesium-carbonate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.580Z"
}