{
  "url": "https://openlegislation.uk/eu-directive-2004-73/annex-n2/division-A.21/division-1/division-1.4",
  "json_url": "https://openlegislation.uk/eu-directive-2004-73/annex-n2/division-A.21/division-1/division-1.4.json",
  "legislation": "eudr/2004/73",
  "legislation_title": "Commission Directive 2004/73/EC of 29 April 2004 adapting to technical progress for the twenty-ninth time Council Directive 67/548/EEC on the approximation of the laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2004-73",
  "path": "annex/n2/division/A.21/division/1/division/1.4",
  "kind": "division",
  "number": "1.4",
  "heading": "PRINCIPLE OF THE TEST METHOD",
  "text": "The liquid to be tested is mixed in a 1 to 1 ratio, by mass, with fibrous cellulose and introduced into a pressure vessel. If during mixing or filling spontaneous ignition occurs, no further testing is necessary.\nIf spontaneous ignition does not occur the full test is carried out. The mixture is heated in a pressure vessel and the mean time taken for the pressure to rise from 690 kPa to 2070 kPa above atmospheric is determined. This is compared with the mean pressure rise time for the 1:1 mixture of the reference substance(s) and cellulose.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2004/73/annex/n2/division/A.21/division/1/division/1.4",
    "retrieved_at": "2026-11-01T15:22:47.605967+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."
}