{
  "url": "https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-1993/schedule-4/part-II/paragraph-5",
  "json_url": "https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-1993/schedule-4/part-II/paragraph-5.json",
  "legislation": "uksi/1993/1746",
  "legislation_title": "The Chemicals (Hazard Information and Packaging) Regulations 1993",
  "legislation_url": "https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-1993",
  "path": "schedule/4/part/II/paragraph/5",
  "kind": "paragraph",
  "number": "5",
  "heading": "Sensitizing Effects",
  "text": "(1) Solid and liquid preparations—Substances that produce such effects are classified:\nat least as harmful (Xn) and assigned R42 if this effect can be produced by inhalation,\nat least as irritant (Xi) and assigned R43 if this effect can be produced through contact with the skin,\nat least as harmful (Xn) and assigned R42/43 if this effect can be produced in both these ways.\nThe individual concentration limits specified in Table V determine, when appropriate, the classification of solid and liquid preparations and shall determine which particular risk phrases are to be assigned to them.\nTABLE V\nClassification of the substance\nClassification of the preparation and standard risk phrase\nAt least Xn and R42\nAt least Xi and R43\nAt least Xn and R42\nconc. ≥ 1% R42 obligatory\nAt least Xi and R43\nconc. ≥ 1% R43 obligatory\nAt least Xn and R42/43\nconc. ≥ 1% R42/43 obligatory\n(2) Gaseous Preparations—Gases that produce such effects are classified:\nat least as harmful (Xn) and assigned R42 or R42/43 as appropriate. The individual concentration limits specified in Table VA below, expressed as a volume/volume percentage determine, when appropriate, the classification of gaseous preparations and shall determine which particular risk phrases are to be assigned to them.\nTABLE VA\nClassification of the substance (gas)\nClassification of the gaseous preparation and standard risk phrase\nAt least Xn with R42\nAt least Xn with R42\nconc. ≥ 0.2% R42 obligatory\nAt least Xn with R42/43\nconc. ≥ 0.2% R42/43 obligatory",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1993/1746/schedule/4/part/II/paragraph/5",
    "retrieved_at": "2026-10-29T13:53:58.417577+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."
}