{
  "url": "https://openlegislation.uk/planning-hazardous-substances-regulations-2015/schedule-1/part-1",
  "json_url": "https://openlegislation.uk/planning-hazardous-substances-regulations-2015/schedule-1/part-1.json",
  "legislation": "uksi/2015/627",
  "legislation_title": "The Planning (Hazardous Substances) Regulations 2015",
  "legislation_url": "https://openlegislation.uk/planning-hazardous-substances-regulations-2015",
  "path": "schedule/1/part/1",
  "kind": "part",
  "number": "1",
  "heading": "Categories of substances",
  "text": "Column 1Hazard categories in accordance with the CLP Regulation\nColumn 2Controlled quantity (tonnes)\nSection ‘H’ – HEALTH HAZARDS\nH1 ACUTE TOXIC Category 1, all exposure routes\n5\nH2 ACUTE TOXIC\n— Category 2, all exposure routes\n— Category 3, inhalation exposure route (see note 8)\n50\nH3 STOT SPECIFIC TARGET ORGAN TOXICITY – SINGLE EXPOSURE STOT SE Category 1\n50\nSection ‘P’ – PHYSICAL HAZARDS\nP1a EXPLOSIVES (see note 9)\n— Unstable explosives or\n— Explosives, Division 1.1, 1.2, 1.3, 1.5 or 1.6, or — Substances or mixtures having explosive properties according to method A.14 of Regulation (EC) No 440/2008 laying down test methods pursuant to Regulation (EC) No. 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) (see note 10) and do not belong to the hazard classes Organic peroxides or Self-reactive substances and mixtures\n10\nP1b EXPLOSIVES (see note 9)\nExplosives, Division 1.4 (see note 11)\n50\nP2 FLAMMABLE GASES Flammable gases, Category 1 or 2\n10\nP3a FLAMMABLE AEROSOLS (see note 12(1)) ‘Flammable’ aerosols Category 1 or 2, containing flammable gases Category 1 or 2 or flammable liquids Category 1\n150 (net)\nP3b FLAMMABLE AEROSOLS (see note 12(1)) ‘Flammable’ aerosols Category 1 or 2, not containing flammable gases Category 1 or 2 nor flammable liquids category 1 (see note 12(2))\n5,000 (net)\nP4 OXIDISING GASES\nOxidising gases, Category 1\n50\nP5a FLAMMABLE LIQUIDS\n— Flammable liquids, Category 1, or\n— Flammable liquids Category 2 or 3 maintained at a temperature above their boiling point, or\n— Other liquids with a flash point ≤ 60 °C, maintained at a temperature above their boiling point (see note 13)\n10\nP5b FLAMMABLE LIQUIDS\n— Flammable liquids Category 2 or 3 where particular processing conditions, such as high pressure or high temperature, may create major-accident hazards, or\n— Other liquids with a flash point ≤ 60 °C where particular processing conditions, such as high pressure or high temperature, may create major-accident hazards (see note 13)\n50\nP5c FLAMMABLE LIQUIDS\nFlammable liquids, Categories 2 or 3 not covered by P5a and P5b\n5,000\nP6a SELF-REACTIVE SUBSTANCES AND MIXTURES and ORGANIC PEROXIDES\nSelf-reactive substances and mixtures, Type A or B or organic peroxides, Type A or B\n10\nP6b SELF-REACTIVE SUBSTANCES AND MIXTURES and ORGANIC PEROXIDES\nSelf-reactive substances and mixtures, Type C, D, E or F or organic peroxides, Type C, D, E, or F\n50\nP7 PYROPHORIC LIQUIDS AND SOLIDS\nPyrophoric liquids, Category 1\nPyrophoric solids, Category 1\n50\nP8 OXIDISING LIQUIDS AND SOLIDS\nOxidising Liquids, Category 1, 2 or 3, or\nOxidising Solids, Category 1, 2 or 3\n50\nSection ‘E’ – ENVIRONMENTAL HAZARDS\nE1 Hazardous to the Aquatic Environment in Category Acute 1 or Chronic 1\n100\nE2 Hazardous to the Aquatic Environment in Category Chronic 2\n200\nSection ‘O’ – OTHER HAZARDS\nO1 Substances or mixtures with hazard statement EUH014\n100\nO2 Substances and mixtures which in contact with water emit flammable gases, Category 1\n100\nO3 Substances or mixtures with hazard statement EUH029\n50",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2015/627/schedule/1/part/1",
    "retrieved_at": "2026-10-28T23:43:23.974380+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."
}