{
  "url": "https://openlegislation.uk/control-of-major-accident-hazards-regulations-1999/schedule-1/part-3n2",
  "json_url": "https://openlegislation.uk/control-of-major-accident-hazards-regulations-1999/schedule-1/part-3n2.json",
  "legislation": "uksi/1999/743",
  "legislation_title": "The Control of Major Accident Hazards Regulations 1999",
  "legislation_url": "https://openlegislation.uk/control-of-major-accident-hazards-regulations-1999",
  "path": "schedule/1/part/3n2",
  "kind": "part",
  "number": "3",
  "heading": "Categories of Substances and Preparations not specifically named in Part 2",
  "text": "Column 1\nColumn 2\nColumn 3\nCategories of dangerous substances\nQuantity in tonnes\n1 VERY TOXIC\n5\n20\n2 TOXIC\n50\n200\n3 OXIDISING\n50\n200\n4 EXPLOSIVE (where the substance or preparation falls within the definition given in Note 2(a))\n50\n200\n5 EXPLOSIVE (where the substance or preparation falls within the definition given in Note 2(b))\n10\n50\n6 FLAMMABLE (where the substance or preparation falls within the definition given in Note 3(a))\n5,000\n50,000\n7a HIGHLY FLAMMABLE (where the substance or preparation falls within the definition given in Note 3(b)(i))\n50\n200\n7b HIGHLY FLAMMABLE liquids (where the substance or preparation falls within the definition given in Note 3(b)(ii))\n5,000\n50,000\n8 EXTREMELY FLAMMABLE (where the substance or preparation falls within the definition given in Note 3(c))\n10\n50\n9 DANGEROUS FOR THE ENVIRONMENT in combination with risk phrases:\n(i) R50: “Very toxic to aquatic organisms”\n200\n500\n(ii) R51: “Toxic to aquatic organisms”; and\nR53: “May cause long-term adverse effects in the aquatic environment”\n500\n2,000\n10 ANY CLASSIFICATION not covered by those given above in combination with risk phrases:\n(i) R14: “Reacts violently with water” (including R14/15)\n100\n500\n(ii) R29: “in contact with water, liberates toxic gas”\n50\n200",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [
    {
      "type": "words inserted",
      "affecting": "uksi/2014/162",
      "affecting_title": "The Heavy Fuel Oil (Amendment) Regulations 2014"
    },
    {
      "type": "substituted",
      "affecting": "uksi/2005/1088",
      "affecting_title": "The Control of Major Accident Hazards (Amendment) Regulations 2005"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1999/743/schedule/1/part/3n2",
    "retrieved_at": "2026-10-29T10:55:56.898069+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."
}