{
  "url": "https://openlegislation.uk/alkali-c-works-order-northern-ireland-1991/schedule-1",
  "json_url": "https://openlegislation.uk/alkali-c-works-order-northern-ireland-1991/schedule-1.json",
  "legislation": "nisr/1991/49",
  "legislation_title": "The Alkali, & c. Works Order (Northern Ireland) 1991",
  "legislation_url": "https://openlegislation.uk/alkali-c-works-order-northern-ireland-1991",
  "path": "schedule/1",
  "kind": "schedule",
  "number": "1",
  "heading": "List of Noxious or Offensive Gases in substitution for that contained in Section 27 of the Alkali Act",
  "text": "The expression “noxious or offensive gas”includes the following gases and fumes—\nAcetic acid or its anhydride\nAcetylene\nAcrylates\nAcrylic acid\nAldehydes\nAmines\nAmmonia or its compounds\nArsenic or its compounds\nBromine or its compounds\nCarbon dioxide\nCarbon disulphide\nCarbon monoxide\nChlorine or its compounds\nCyanogen or its compounds\nDi-isocyanates\nEthylene and higher olefines\nFluorine or its compounds\nFumaric acid\nFumes containing aluminium, antimony, arsenic, asbestos, beryllium, cadmium, calcium, chlorine, chromium, copper, gallium, glass fibres, iron, lead, magnesium manganese, mercury, mineral fibres, molybdenum, nickel, phosphorus, platinum, potassium, selenium, silicon, silver, sodium, sulphur, tellurium, thallium, tin, titanium, tungsten, uranium, vanadium, zinc or their compounds\nFumes from benzene works, paraffin oil works, petrochemical works, petroleum works, tar works or bitumen works\nHydrocarbons\nHydrogen sulphide\nIodine or its compounds\nIsocyanates\nLead or its compounds\nMaleic acid or its anhydride\nMercury or its compounds\nMetal carbonyls\nMuriatic acid (Hydrogen chloride)\nNitric acid or oxides of nitrogen\nNitriles\nPhenols\nPhosphorus or its compounds\nPhthalic acid or its anhydride\nProducts containing hydrogen from the partial oxidation of hydrocarbons\nPyridine or its homologues\nStyrene\nSulphuric acid or sulphur trioxide\nSulphurous acid or sulphur dioxide\nVinyl chloride\nVolatile organic sulphur compounds.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/1991/49/schedule/1",
    "retrieved_at": "2026-10-29T03:04:17.382019+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."
}