{
  "url": "https://openlegislation.uk/carcinogens-and-mutagens-miscellaneous-amendments-regulations-2020/schedule",
  "json_url": "https://openlegislation.uk/carcinogens-and-mutagens-miscellaneous-amendments-regulations-2020/schedule.json",
  "legislation": "uksi/2020/40",
  "legislation_title": "The Carcinogens and Mutagens (Miscellaneous Amendments) Regulations 2020",
  "legislation_url": "https://openlegislation.uk/carcinogens-and-mutagens-miscellaneous-amendments-regulations-2020",
  "path": "schedule",
  "kind": "schedule",
  "number": null,
  "heading": "Table of Limit Values",
  "text": "Name of agent\nEC No\nCAS No\nLimit values\nNotation\nTransitional measures\nmg/m3\nppm\nf/ml\n(1)EC No, i.e. Einecs, ELINCS or NLP, is the official number of the substance within the European Union, as defined in Section 1.1.1.2 in Annex VI, Part 1, to Regulation (EC) No 1272/2008.\n(2)CAS No: Chemical Abstract Service Registry Number.\n(3)Measured or calculated in relation to a reference period of eight hours.\n(4)mg/m3 = milligrams per cubic metre of air at 20 °C and 101,3 kPa (760 mm mercury pressure).\n(5)ppm = parts per million by volume in air (ml/m3).\n(6)f/ml = fibres per millilitre.\n(7)Inhalable fraction: if hardwood dusts are mixed with other wood dusts, the limit value shall apply to all wood dusts present in that mixture.\n(8)Respirable fraction.\n(9)Substantial contribution to the total body burden via dermal exposure possible.\nHardwood dusts\n—\n—\n2\n—\n—\n—\nLimit value 3 mg/m3 until 17 January 2023\nChromium (VI) compounds which are carcinogens within the meaning of point (i) of Article 2(a) (as chromium)\n—\n—\n0,005\n—\n—\n—\nLimit values:\n0,025 mg/m3 for welding or plasma cutting processes or similar work processes that generate fume until 17 January 2025, and\n0,010 mg/m3 until 17 January 2025 in all other cases\nRefractory ceramic fibres which are carcinogens within the meaning of point (i) of Article 2(a)\n—\n—\n—\n—\n0,3\n—\nRespirable crystalline silica dust\n—\n—\n0,1\n—\n—\n—\nBenzene\n200-753-7\n71-43-2\n3,25\n1\n—\nskin\nVinyl chloride monomer\n200-831-0\n75-01-4\n2,6\n1\n—\n—\nEthylene oxide\n200-849-9\n75-21-8\n1,8\n1\n—\nskin\n1,2-Epoxypropane\n200-879-2\n75-56-9\n2,4\n1\n—\n—\nAcrylamide\n201-173-7\n79-06-1\n0,1\n—\n—\nskin\n2-Nitropropane\n201-209-1\n79-46-9\n18\n5\n—\n—\no-Toluidine\n202-429-0\n95-53-4\n0,5\n0,1\n—\nskin\n1,3-Butadiene\n203-450-8\n106-99-0\n2,2\n1\n—\n—\nHydrazine\n206-114-9\n302-01-2\n0,013\n0,01\n—\nskin\nBromoethylene\n209-800-6\n593-60-2\n4,4\n1\n—\n—",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "(1)EC No, i.e. Einecs, ELINCS or NLP, is the official number of the substance within the European Union, as defined in Section 1.1.1.2 in Annex VI, Part 1, to Regulation (EC) No 1272/2008."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "(2)CAS No: Chemical Abstract Service Registry Number."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "(3)Measured or calculated in relation to a reference period of eight hours."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "(4)mg/m3 = milligrams per cubic metre of air at 20 °C and 101,3 kPa (760 mm mercury pressure)."
    },
    {
      "type": "footnote",
      "label": "f5",
      "text": "(5)ppm = parts per million by volume in air (ml/m3)."
    },
    {
      "type": "footnote",
      "label": "f6",
      "text": "(6)f/ml = fibres per millilitre."
    },
    {
      "type": "footnote",
      "label": "f7",
      "text": "(7)Inhalable fraction: if hardwood dusts are mixed with other wood dusts, the limit value shall apply to all wood dusts present in that mixture."
    },
    {
      "type": "footnote",
      "label": "f8",
      "text": "(8)Respirable fraction."
    },
    {
      "type": "footnote",
      "label": "f9",
      "text": "(9)Substantial contribution to the total body burden via dermal exposure possible."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2020/40/schedule",
    "retrieved_at": "2026-10-28T22:34:41.239519+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."
}