{
  "url": "https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-northern-ireland-1993/schedule-4/part-II",
  "json_url": "https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-northern-ireland-1993/schedule-4/part-II.json",
  "legislation": "nisr/1993/412",
  "legislation_title": "Chemicals (Hazard Information and Packaging) Regulations (Northern Ireland) 1993",
  "legislation_url": "https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-northern-ireland-1993",
  "path": "schedule/4/part/II",
  "kind": "part",
  "number": "II",
  "heading": "CONCENTRATION LIMITS TO BE USED IN APPLYING THE CONVENTIONAL METHOD OF ASSESSING HEALTH EFFECTS IN ACCORDANCE WITH PART I WHERE NO SUCH LIMITS ARE GIVEN IN THE APPROVED SUPPLY LIST",
  "text": "An assessment must be made of the health effects that the use of a substance or a preparation might entail. For that purpose the dangerous health effects have been subdivided into:—\nacute lethal effects;\nnon-lethal irreversible effects after a single exposure;\nsevere effects after repeated or prolonged exposure;\ncorrosive effects;\nirritant effects;\nsensitizing effects;\ncarcinogenic effects;\nmutagenic effects; and\nteratogenic effects.\nThe systematic assessment of all the dangerous health effects is expressed by means of concentration limits in conjunction with the classification of the substance, that is to say, the symbol and risk phrases which are assigned to each substance under consideration.\nIn relation to solid and liquid preparations any reference to a percentage concentration shall be treated as a reference to that concentration as a percentage by weight.\nIn relation to gaseous preparations any reference to a percentage concentration shall be treated as a reference to that concentration as a percentage by volume.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/1993/412/schedule/4/part/II",
    "retrieved_at": "2026-10-29T02:49:29.044491+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."
}