{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/ground-limestone",
  "slug": "ground-limestone",
  "name": "Ground limestone",
  "identifiers": {
    "e_number": null,
    "ins_number": null,
    "cas_number": null,
    "inchikey": "VTYYLEPIZMXCLO-UHFFFAOYSA-L",
    "pubchem_cid": 10112
  },
  "functional_class": null,
  "summary": "Ground limestone is calcium carbonate used as a calcium source, an acidity regulator and a dough conditioner. It is the same mineral as chalk and eggshell.",
  "derivation_summary": "Quarried limestone, washed and milled to food grade. In the United Kingdom, adding calcium to white flour has been a legal requirement since wartime rationing.",
  "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 184.1409",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1409"
          },
          "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": "471-34-1",
      "type": "cas",
      "source": "pubchem"
    },
    {
      "name": "Aeromatt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Akadama",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Albacar",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Albafil",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Albaglos",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Albaglos SF",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Allied whiting",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Aragonite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Atomite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcene CO",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcene NC",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcicoll",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CALCIUM CARBONATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcium carbonate (1:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calmos",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calmote",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calofort S",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calofort T",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calofort U",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calopake F",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calopake FS",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calopake H",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calopake PC",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calseeds",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Caltec",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Caltrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calwhite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Camel-carb",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Camel-tex",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Camel-wite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Carbium",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Carbonic acid calcium salt (1:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Carusis P",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Chemcarb",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Clefnon",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dacote",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Duramite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Gilder's whiting",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hakuenka CC",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hakuenka CCR",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hakuenka DD",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hakuenka O",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hakuenka PX",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hakuenka PZ",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Homocal D",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Hydrocarb",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kotamite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Levigated chalk",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Marble dust",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Marble white",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Marfil",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Microcarb",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Micromya",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Multifex MM",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Multiflex MM",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Multiflex SC",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Neoanticid",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Precipitated calcium carbonate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Tums",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ground limestone",
      "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, \"Ground limestone\", https://foodadditiveindex.com/additives/ground-limestone. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.555Z"
}