{
  "url": "https://openlegislation.uk/bread-and-flour-wales-regulations-2025/schedule-2",
  "json_url": "https://openlegislation.uk/bread-and-flour-wales-regulations-2025/schedule-2.json",
  "legislation": "wsi/2025/88",
  "legislation_title": "The Bread and Flour (Wales) Regulations 2025",
  "legislation_url": "https://openlegislation.uk/bread-and-flour-wales-regulations-2025",
  "path": "schedule/2",
  "kind": "schedule",
  "number": "2",
  "heading": "Specification for E 170 calcium carbonate",
  "text": "Specification for E 170 calcium carbonate for the purpose of Schedule 1, paragraph 1, Table 1\n(1) European Inventory of Existing Commercial Chemical Substances, as published in OJ No C 146A, 15.6.1990, p.1.\n(2) Sum of ethylene oxide and 2-chloroethanol expressed as ethylene oxide (i.e. ethylene oxide + (0.55 × 2-chloroethanol)).\nSynonyms\nCI Pigment White 18; Chalk\nDefinition\nCalcium carbonate is the product obtained from ground limestone or by the precipitation of calcium ions with carbonate ions.\nColour Index No\n77220\nEINECS number\nCalcium carbonate: 207-439-9\nLimestone: 215-279-6\nChemical name\nCalcium carbonate\nChemical formula\nCaCO3\nMolecular weight\n100.1 g/mol\nAssay\nContent ≥ 98% on the anhydrous basis\nDescription\nWhite crystalline or amorphous, odourless and tasteless powder\nIdentification\nSolubility\nPractically insoluble in water and in alcohol. Dissolves with effervescence in diluted acetic acid, in diluted hydrochloric acid and in diluted nitric acid, and the resulting solutions, after boiling, give positive tests for calcium.\nPurity\nLoss on drying\n≤ 2.0% (200°C, 4 hours)\nAcid-insoluble substances\n≤ 0.2%\nMagnesium and alkali salt\n≤ 1.0%\nFluoride\n≤ 50 mg/kg\nAntimony (Sb)\n≤ 100mg/kg, singly or in combination\nCopper (Cu)\nChromium (Cr)\nZinc (Zn)\nBarium (Ba)\nArsenic (As)\n≤ 3 mg/kg\nLead (Pb)\n≤ 3 mg/kg\nCadmium (Cd)\n≤ 3 mg/kg\nEthylene oxide\nTotal residues of ethylene oxide, irrespective of origin, must not exceed 0.1 mg/kg",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 2 in force at 19.2.2025, see reg. 1(2)"
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "(1) European Inventory of Existing Commercial Chemical Substances, as published in OJ No C 146A, 15.6.1990, p.1."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "(2) Sum of ethylene oxide and 2-chloroethanol expressed as ethylene oxide (i.e. ethylene oxide + (0.55 × 2-chloroethanol))."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2025/88/schedule/2",
    "retrieved_at": "2026-10-28T22:58:42.283241+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}